"God of his Infinite goodness (if we will but take notice 
            of his goodness unto this Nation) hath made this Country a very Granary 
            for the supplying of Smiths with Iron, Cole, and Lime made with cole, 
            which hath much supplied these men with Corn also of late; and from 
            these men a great part, not only of this Island, but also of his Majestie’s 
            other Kingdoms and Territories, with Iron wares have their supply, 
            and Wood in these parts almost exhausted, although it were of late 
            a mighty woodland country." - DUDLEY’s Metallum Martis, 1665. 
          The severe restrictions enforced by the legislature 
            against the use of wood in iron-smelting had the effect of almost 
            extinguishing the manufacture. New furnaces ceased to be erected, 
            and many of the old ones were allowed to fall into decay, until it 
            began to be feared that this important branch of industry would become 
            completely lost. The same restrictions alike affected the operations 
            of the glass manufacture, which, with the aid of foreign artisans, 
            had been gradually established in England, and was becoming a thriving 
            branch of trade. It was even proposed that the smelting of iron should 
            be absolutely prohibited: "many think," said a contemporary writer, 
            "that there should be NO WORKS ANYWHERE - they do so devour the woods." 
          
          The use of iron, however, could not be dispensed with. 
            The very foundations of society rested upon an abundant supply of 
            it, for tools and implements of peace, as well as for weapons of war. 
            In the dearth of the article at home, a supply of it was therefore 
            sought for abroad; and both iron and steel came to be imported in 
            largely-increased quantities. This branch of trade was principally 
            in the hands of the Steelyard Company of Foreign Merchants, established 
            in Upper Thames Street, a little above London Bridge; and they imported 
            large quantities of iron and steel from foreign countries, principally 
            from Sweden, Germany, and Spain. The best iron came from Spain, though 
            the Spaniards on their part coveted our English made cannons, which 
            were better manufactured than theirs; while the best steel came from 
            Germany and Sweden. 
          Under these circumstances, it was natural that persons 
            interested in the English iron manufacture should turn their attention 
            to some other description of fuel which should serve as a substitute 
            for the prohibited article. There was known to be an abundance of 
            coal in the northern and midland counties, and it occurred to some 
            speculators more than usually daring, to propose it as a substitute 
            for the charcoal fuel made from wood. But the same popular prejudice 
            which existed against the use of coal for domestic purposes, prevented 
            its being employed for purposes of manufacture; and they were thought 
            very foolish persons indeed who first promulgated the idea of smelting 
            iron by means of pit-coal. The old manufacturers held it to be impossible 
            to reduce the ore in any other way than by means of charcoal of wood. 
            It was only when the wood in the neighbourhood of the ironworks had 
            been almost entirely burnt up, that the manufacturers were driven 
            to entertain the idea of using coal as a substitute; but more than 
            a hundred years passed before the practice of smelting iron by its 
            means became general. 
          The first who took out a patent for the purpose was 
            one Simon Sturtevant, a German skilled in mining operations; the professed 
            object of his invention being "to neale, melt, and worke all kind 
            of metal oares, irons, and steeles with sea-coale, pit-coale, earth-coale, 
            and brush fewell." The principal end of his invention, he states in 
            his Treatise of Metallica, is to save the consumption and waste of 
            the woods and timber of the country; and, should his design succeed, 
            he holds that it "will prove to be the best and most profitable business 
            and invention that ever was known or invented in England these many 
            yeares." He says he has already made trial of the process on a small 
            scale, and is confident that it will prove equally successful on a 
            large one. Sturtevant was not very specific as to his process; but 
            it incidentally appears to have been his purpose to reduce the coal 
            by an imperfect combustion to the condition of coke, thereby ridding 
            it of "those malignant proprieties which are averse to the nature 
            of metallique substances." The subject was treated by him, as was 
            customary in those days, as a great mystery, made still more mysterious 
            by the multitude of learned words under which he undertook to describe 
            his "Ignick Invention" All the operations of industry were then treated 
            as secrets. Each trade was a craft, and those who followed it were 
            called craftsmen. Even the common carpenter was a handicraftsman; 
            and skilled artisans were "cunning men." But the higher branches of 
            work were mysteries, the communication of which to others was carefully 
            guarded by the regulations of the trades guilds. Although the early 
            patents are called specifications, they in reality specify nothing. 
            They are for the most part but a mere haze of words, from which very 
            little definite information can be gleaned as to the processes patented. 
            It may be that Sturtevant had not yet reduced his idea to any practicable 
            method, and therefore could not definitely explain it. However that 
            may be, it is certain that his process failed when tried on a large 
            scale, and Sturtevant’s patent was accordingly cancelled at the end 
            of a year. 
          The idea, however, had been fairly born, and repeated 
            patents were taken out with the same object from time to time. Thus, 
            immediately on Sturtevant’s failure becoming known, one John Rovenzon, 
            who had been mixed up with the other’s adventure, applied for a patent 
            for making iron by the same process, which was granted him in 1613. 
            His ‘Treatise of Metallica’ shows that Rovenzon had a true conception 
            of the method of manufacture. Nevertheless he, too, failed in carrying 
            out the invention in practice, and his patent was also cancelled. 
            Though these failures were very discouraging, like experiments continued 
            to be made and patents taken out,--principally by Dutchmen and Germans, 
            but no decided success seems to have attended their efforts until 
            the year 1620, when Lord Dudley took out his patent "for melting iron 
            ore, making bar-iron, &c., with coal, in furnaces, with bellows." 
            This patent was taken out at the instance of his son Dud Dudley, whose 
            story we gather partly from his treatise entitled ‘Metallum Martis,’ 
            and partly from various petitions presented by him to the king, which 
            are preserved in the State Paper Office, and it runs as follows: -- 
          
          Dud Dudley was born in 1599, the natural son of Edward 
            Lord Dudley of Dudley Castle in the county of Worcester. He was the 
            fourth of eleven children by the same mother, who is described in 
            the pedigree of the family given in the Herald’s visitation of the 
            county of Stafford in the year 1663, signed by Dud Dudley himself, 
            as "Elizabeth, daughter of William Tomlinson of Dudley, concubine 
            of Edward Lord Dudley." Dud’s eldest brother is described in the same 
            pedigree as Robert Dudley, Squire, of Netherton Hall; and as his sisters 
            mostly married well, several of them county gentlemen, it is obvious 
            that the family, notwithstanding that the children were born out of 
            wedlock, held a good position in their neighbourhood, and were regarded 
            with respect. Lord Dudley, though married and having legitimate heirs 
            at the time, seems to have attended to the up-bringing of his natural 
            children; educating them carefully, and afterwards employing them 
            in confidential offices connected with the management of his extensive 
            property. Dud describes himself as taking great delight, when a youth, 
            in his father’s iron-works near Dudley, where he obtained considerable 
            knowledge of the various processes of the manufacture. 
          The town of Dudley was already a centre of the iron 
            manufacture, though chiefly of small wares, such as nails, horse-shoes, 
            keys, locks, and common agricultural tools; and it was estimated that 
            there were about 20,000 smiths and workers in iron of various kinds 
            living within a circuit of ten miles of Dudley Castle. But, as in 
            the southern counties, the production of iron had suffered great diminution 
            from the want of fuel in the district, "though formerly a mighty woodland 
            country; and many important branches of the local trade were brought 
            almost to a stand-still. Yet there was an extraordinary abundance 
            of coal to be met with in the neighbourhood - coal in some places 
            lying in seams ten feet thick - ironstone four feet thick immediately 
            under the coal, with limestone conveniently adjacent to both. The 
            conjunction seemed almost providential - "as if." observes Dud, "God 
            had decreed the time when and how these smiths should be supplied, 
            and this island also, with iron, and most especially that this cole 
            and ironstone should give the first and just occasion for the invention 
            of smelting iron with pit-cole;" though, as we have already seen, 
            all attempts heretofore made with that object had practically failed. 
          
          Dud was a special favourite of the Earl his father, 
            who encouraged his speculations with reference to the improvement 
            of the iron manufacture, and gave him an education calculated to enable 
            him to turn his excellent practical abilities to account. He was studying 
            at Baliol College, Oxford, in the year 1619, when the Earl sent for 
            him to take charge of an iron furnace and two forges in the chase 
            of Pensnet in Worcestershire. He was no sooner installed manager of 
            the works, than, feeling hampered by the want of wood for fuel, his 
            attention was directed to the employment of pit-coal as a substitute. 
            He altered his furnace accordingly, so as to adapt it to the new process, 
            and the result of the first trial was such as to induce him to persevere. 
            It is nowhere stated in Dud Dudley’s Treatise what was the precise 
            nature of the method adopted by him; but it is most probable that, 
            in endeavouring to substitute coal for wood as fuel, he would subject 
            the coal to a process similar to that of charcoal-burning. The result 
            would be what is called Coke; and as Dudley informs us that he followed 
            up his first experiment with a second blast, by means of which he 
            was enabled to produce good marketable iron, the presumption is that 
            his success was also due to an improvement of the blast which he contrived 
            for the purpose of keeping up the active combustion of the fuel. Though 
            the quantity produced by the new process was comparatively small - 
            not more than three tons a week from each furnace - Dudley anticipated 
            that greater experience would enable him to increase the quantity; 
            and at all events he had succeeded in proving the practicability of 
            smelting iron with fuel made from pit-coal, which so many before him 
            had tried in vain. 
          Immediately after the second trial had been made with 
            such good issue, Dud wrote to his father the Earl, then in London, 
            informing him what he had done, and desiring him at once to obtain 
            a patent for the invention from King James. This was readily granted, 
            and the patent (No. 18), dated the 22nd February, 1620, 
            was taken out in the name of Lord Dudley himself. 
          Dud proceeded with the manufacture of iron at Pensnet, 
            and also at Cradley in Staffordshire, where he erected another furnace; 
            and a year after the patent was granted he was enabled to send up 
            to the Tower, by the King’s command, a considerable quantity of the 
            new iron for trial. Many experiments were made with it: its qualities 
            were fairly tested, and it was pronounced "good merchantable iron." 
            Dud adds, in his Treatise, that his brother-in-law, Richard Parkshouse, 
            of Sedgeley, "had a fowling-gun there made of the Pit-cole iron," 
            which was "well approved." There was therefore every prospect of the 
            new method of manufacture becoming fairly established, and with greater 
            experience further improvements might with confidence be anticipated, 
            when a succession of calamities occurred to the inventor which involved 
            him in difficulties and put an effectual stop to the progress of his 
            enterprise. 
          The new works had been in successful operation little 
            more than a year, when a flood, long after known as the "Great May-day 
            Flood," swept away Dudley’s principal works at Cradley, and otherwise 
            inflicted much damage throughout the district. "At the market town 
            called Stourbridge," says Dud, in the course of his curious narrative, 
            "although the author sent with speed to preserve the people from drowning, 
            and one resolute man was carried from the bridge there in the day-time, 
            the nether part of the town was so deep in water that the people had 
            much ado to preserve their lives in the uppermost rooms of their houses." 
            Dudley himself received very little sympathy for his losses. On the 
            contrary, the iron-smelters of the district rejoiced exceedingly at 
            the destruction of his works by the flood. They had seen him making 
            good iron by his new patent process, and selling it cheaper than they 
            could afford to do. They accordingly put in circulation all manner 
            of disparaging reports about his iron. It was bad iron, not fit to 
            be used; indeed no iron, except what was smelted with charcoal of 
            wood, could be good. To smelt it with coal was a dangerous innovation, 
            and could only result in some great public calamity. The ironmasters 
            even appealed to King James to put a stop to Dud’s manufacture, alleging 
            that his iron was not merchantable. And then came the great flood, 
            which swept away his works; the hostile ironmasters now hoping that 
            there was an end for ever of Dudley’s pit-coal iron. 
          But Dud, with his wonted energy, forthwith set to work 
            and repaired his furnaces and forges, though at great cost; and in 
            the course of a short time the new manufacture was again in full progress. 
            The ironmasters raised a fresh outcry against him, and addressed another 
            strong memorial against Dud and his iron to King James. This seems 
            to have taken effect; and in order to ascertain the quality of the 
            article by testing it upon a large scale, the King commanded Dudley 
            to send up to the Tower of London, with every possible speed, quantities 
            of all the sorts of bar-iron made by him, fit for the "making of muskets, 
            carbines, and iron for great bolts for shipping; which iron," continues 
            Dud, "being so tried by artists and smiths, the ironmasters and iron-mongers 
            were all silenced until the 21st year of King James’s reign." 
            The ironmasters then endeavoured to get the Dudley patent included 
            in the monopolies to be abolished by the statute of that year; but 
            all they could accomplish was the limitation of the patent to fourteen 
            years instead of thirty-one; the special exemption of the patent from 
            the operation of the statute affording a sufficient indication of 
            the importance already attached to the invention. After that time 
            Dudley "went on with his invention cheerfully, and made annually great 
            store of iron, good and merchantable, and sold it unto diverse men 
            at twelve pounds per ton." "I also," said he, "made all sorts of cast-iron 
            wares, as brewing cisterns, pots, mortars, &c., better and cheaper 
            than any yet made in these nations with charcoal, some of which are 
            yet to be seen by any man (at the author’s house in the city of Worcester) 
            that desires to be satisfied of the truth of the invention." 
          Notwithstanding this decided success, Dudley encountered 
            nothing but trouble and misfortune. The ironmasters combined to resist 
            his invention; they fastened lawsuit’s upon him, and succeeded in 
            getting him ousted from his works at Cradley. From thence he removed 
            to Himley in the county of Stafford, where he set up a pit-coal furnace; 
            but being without the means of forging the iron into bars, he was 
            constrained to sell the pig-iron to the charcoal-ironmasters, "who 
            did him much prejudice, not only by detaining his stock, but also 
            by disparaging his iron." He next proceeded to erect a large new furnace 
            at Hasco Bridge, near Sedgeley, in the same county, for the purpose 
            of carrying out the manufacture on the most improved principles. This 
            furnace was of stone, twenty-seven feet square, provided with unusually 
            large bellows; and when in full work he says he was enabled to turn 
            out seven tons of iron per week, "the greatest quantity of pit-coal 
            iron ever yet made in Great Britain." At the same place he discovered 
            and opened out new workings of coal ten feet thick, lying immediately 
            over the ironstone, and he prepared to carry on his operations on 
            a large scale; but the new works were scarcely finished when a mob 
            of rioters, instigated by the charcoal-ironmasters, broke in upon 
            them, cut in pieces the new bellows, destroyed the machinery, and 
            laid the results of all his deep-laid ingenuity and persevering industry 
            in ruins. From that time forward Dudley was allowed no rest nor peace: 
            he was attacked by mobs, worried by lawsuits, and eventually overwhelmed 
            by debts. He was then seized by his creditors and sent up to London, 
            where he was held a prisoner in the Comptoir for several thousand 
            pounds. The charcoal-iron men thus for a time remained masters of 
            the field. 
          Charles I. seems to have taken pity on the suffering 
            inventor; and on his earnest petition, setting forth the great advantages 
            to the nation of his invention, from which he had as yet derived no 
            advantage, but only losses, sufferings, and persecution, the King 
            granted him a renewal of his patent in the year 1638; three other 
            gentlemen joining him as partners, and doubtless providing the requisite 
            capital for carrying on the manufacture after the plans of the inventor. 
            But Dud’s evil fortune continued to pursue him. The patent had scarcely 
            been securedere the Civil War broke out, and the arts of peace must 
            at once perforce give place to the arts of war. Dud’s nature would 
            not suffer him to be neutral at such a time; and when the nation divided 
            itself into two hostile camps, his predilections being strongly loyalist, 
            he took the side of the King with his father. It would appear from 
            a petition presented by him to Charles II. in 1660, setting forth 
            his sufferings in the royal cause, and praying for restoral to certain 
            offices which he had enjoyed under Charles I., that as early as the 
            year 1637 he had been employed by the King on a mission into Scotland, 
            in the train of the Marquis of Hamilton, the King’s Commissioner. 
            Again in 1639, leaving his ironworks and partners, he accompanied 
            Charles on his expedition across the Scotch border, and was present 
            with the army until its discomfiture at Newburn near Newcastle in 
            the following year. 
          The sword was now fairly drawn, and Dud seems for a 
            time to have abandoned his iron-works and followed entirely the fortunes 
            of the king. He was sworn surveyor of the Mews or Armoury in 1640, 
            but being unable to pay for the patent, another was sworn in in his 
            place. Yet his loyalty did not falter, for in the beginning of 1642, 
            when Charles set out from London, shortly after the fall of Strafford 
            and Laud, Dud went with him.  
          He was present before Hull when Sir John Hotham shut 
            its gates in the king’s face; at York when the royal commissions of 
            array were sent out enjoining all loyal subjects to send men, arms, 
            money, and horses, for defence of the king and maintenance of the 
            law; at Nottingham, where the royal standard was raised; at Coventry, 
            where the townspeople refused the king entrance and fired upon his 
            troops from the walls; at Edgehill, where the first great but indecisive 
            battle was fought between the contending parties; in short, as Dud 
            Dudley states in his petition, he was "in most of the battailes that 
            year, and also supplyed his late sacred Majestie’s magazines of Stafford, 
            Worcester, Dudley Castle, and Oxford, with arms, shot, drakes, and 
            cannon; and also, became major unto Sir Frauncis Worsley’s regiment, 
            which was much decaied." 
          In 1643, according to the statement contained in his 
            petition above referred to, Dud Dudley acted as military engineer 
            in setting out the fortifications of Worcester and Stafford, and furnishing 
            them with ordnance. After the taking of Lichfield, in which he had 
            a share, he was made Colonel of Dragoons, and accompanied the Queen 
            with his regiment to the royal head-quarters at Oxford. The year after 
            we find him at the siege of Gloucester, then at the first battle of 
            Newbury leading the forlorn hope with Sir George Lisle, afterwards 
            marching with Sir Charles Lucas into the associate counties, and present 
            at the royalist rout at Newport. That he was esteemed a valiant and 
            skilful officer is apparent from the circumstance, that in 1645 he 
            was appointed general of Prince Maurice’s train of artillery, and 
            afterwards held the same rank under Lord Ashley. The iron districts 
            being still for the most part occupied by the royal armies, our military 
            engineer turned his practical experience to account by directing the 
            forging of drakes of bar-iron, which were found of great use, giving 
            up his own dwelling-house in the city of Worcester for the purpose 
            of carrying on the manufacture of these and other arms. But Worcester 
            and the western towns fell before the Parliamentarian armies in 1646, 
            and all the iron-works belonging to royalists, from which the principal 
            supplies of arms had been drawn by the King’s army, were forthwith 
            destroyed. 
          Dudley fully shared in the dangers and vicissitudes 
            of that trying period, and bore his part throughout like a valiant 
            soldier. For two years nothing was heard of him, until in 1648, when 
            the king’s party drew together again, and made head in different parts 
            of the country, north and south. Goring raised his standard in Essex, 
            but was driven by Fairfax into Colchester, where he defended himself 
            for two months. While the siege was in progress, the royalists determined 
            to make an attempt to raise it. On this Dud Dudley again made his 
            appearance in the field, and, joining sundry other counties, he proceeded 
            to raise 200 men, mostly at his own charge. They were, however, no 
            sooner mustered in Bosco Bello woods near Madeley, than they were 
            attacked by the Parliamentarians, and dispersed or taken prisoners. 
            Dud was among those so taken, and he was first carried to Hartlebury 
            Castle and thence to Worcester, where he was imprisoned. Recounting 
            the sufferings of himself and his followers on this occasion, in the 
            petition presented to Charles II. in 1660, he says, "200 men were 
            dispersed, killed, and some taken, namely, Major Harcourt, Major Elliotts, 
            Capt. Long, and Cornet Hodgetts, of whom Major Harcourt was miserably 
            burned with matches. The petitioner and the rest were stripped almost 
            naked, and in triumph and scorn carried up to the city of Worcester 
            (which place Dud had fortified for the king), and kept close prisoners, 
            with double guards set upon the prison and the city." 
          Notwithstanding this close watch and durance, Dudley 
            and Major Elliotts contrived to break out of gaol, making their way 
            over the tops of the houses, afterwards passing the guards at the 
            city gates, and escaping into the open country. Being hotly pursued 
            , they travelled during the night, and took to the trees during the 
            daytime. They succeeded in reaching London, but only to drop again 
            into the lion’s mouth; for first Major Elliotts was captured, then 
            Dudley, and both were taken before Sir John Warner, the Lord Mayor, 
            who forthwith sent them before the "cursed committee of insurrection," 
            as Dudley calls them. The prisoners were summarily sentenced to be 
            shot to death, and were meanwhile closely imprisoned in the Gatehouse 
            at Westminster, with other Royalists. 
          The day before their intended execution, the prisoners 
            formed a plan of escape. It was Sunday morning, the 20th 
            August, 1648, when they seized their opportunity, "at ten of the cloeke 
            in sermon time;" and, overpowering the gaolers, Dudley, with Sir Henry 
            Bates, Major Elliotts, Captain South, Captain Paris, and six others, 
            succeeded in getting away, and making again for the open country. 
            Dudley had received a wound in the leg, and could only get along with 
            great difficulty. He records that he proceeded on crutches, through 
            Worcester, Tewkesbury, and Gloucester, to Bristol, having been "fed 
            three weeks in private in an enemy’s hay mow." Even the most lynx-eyed 
            Parliamentarian must have failed to recognise the quondam royalist 
            general of artillery in the helpless creature dragging himself along 
            upon crutches; and he reached Bristol in safety. 
          His military career now over, he found himself absolutely 
            penniless. His estate of about £200. per annum had been sequestrated 
            and sold by the government; his house in Worcester had been seized 
            and his sickly wife turned out of doors; and his goods, stock, great 
            shop, and ironworks, which he himself valued at £2000, were 
            destroyed. He had also lost the offices of Serjeant-at-arms, Lieutenant 
            of Ordnance, and Surveyor of the Mews, which he had held under the 
            king; in a word, he found himself reduced to a state of utter destitution. 
          
          Dudley was for some time under the necessity of living 
            in great privacy at Bristol; but when the king had been executed, 
            and the royalists were finally crushed at Worcester, Dud gradually 
            emerged from his concealment. He was still the sole possessor of the 
            grand secret of smelting iron with pit-coal, and he resolved upon 
            one more commercial adventure, in the hope of yet turning it to good 
            account. He succeeded in inducing Walter Stevens, linendraper, and 
            John Stone, merchant, both of Bristol, to join him as partners in 
            an ironwork, which they proceeded to erect near that city. The buildings 
            were well advanced, and nearly £700 had been expended, when 
            a quarrel occurred between Dudley and his partners, which ended in 
            the stoppage of the works, and the concern being thrown into Chancery. 
            Dudley alleges that the other partners "cunningly drew him into a 
            bond," and "did unjustly enter staple actions in Bristol of great 
            value against him, because he was of the king’s party;" but it would 
            appear as if there had been some twist or infirmity of temper in Dudley 
            himself, which prevented him from working harmoniously with such persons 
            as he became associated with in affairs of business. 
          In the mean time other attempts were made to smelt iron 
            with pit-coal. Dudley says that Cromwell and the then Parliament granted 
            a patent to Captain Buck for the purpose; and that Cromwell himself, 
            Major Wildman, and various others were partners in the patent. They 
            erected furnaces and works in the Forest of Dean; but, though Cromwell 
            and his officers could fight and win battles, they could not smelt 
            and forge iron with pit-coal. They brought one Dagney, an Italian 
            glass-maker, from Bristol, to erect a new furnace for them, provided 
            with sundry pots of glass-house clay; but no success attended their 
            efforts. The partners knowing of Dudley’s possession of the grand 
            secret, invited him to visit their works; but all they could draw 
            from him was that they would never succeed in making iron to profit 
            by the methods they were pursuing. They next proceeded to erect other 
            works at Bristol, but still they failed. 
          Major Wildman bought Dudley’s sequestrated estate, in 
            the hope of being able to extort his secret of making iron with pit-coal; 
            but all their attempts proving abortive, they at length abandoned 
            the enterprise in despair. In 1656, one Captain Copley obtained from 
            Cromwell a further patent with a similar object; and erected works 
            near Bristol, and also in the Forest of Kingswood. The mechanical 
            engineers employed by Copley failed in making his bellows blow; on 
            which he sent for Dudley, who forthwith "made his bellows to be blown 
            feisibly;" but Copley failed, like his predecessors, in making iron, 
            and at length he too desisted from further experiments. 
          Such continued to be the state of things until the Restoration, 
            when we find Dud Dudley a petitioner to the king for the renewal of 
            his patent. He was also a petitioner for compensation in respect of 
            the heavy losses he had sustained during the civil wars. The king 
            was besieged by crowds of applicants of a similar sort, but Dudley 
            was no more successful than the others. He failed in obtaining the 
            renewal of his patent. Another applicant for the like privilege, probably 
            having greater interest at court, proved more successful. Colonel 
            Proger and three others were granted a patent to make iron with coal; 
            but Dudley knew the secret, which the new patentees did not; and their 
            patent came to nothing. 
          Dudley continued to address the king in importunate 
            petitions, asking to be restored to his former offices of Serjeant-at-arms, 
            Lieutenant of Ordnance, and Surveyor of the Mews or Armoury. He also 
            petitioned to be appointed Master of the Charter House in Smithfield, 
            professing himself willing to take anything, or hold any living.  
          
          We find him sending in two petitions to a similar effect 
            in June, 1660; and a third shortly after. The result was, that he 
            was reappointed to the office of Serjeant-at-Arms; but the Mastership 
            of the Charter-House was not disposed of until 1662, when it fell 
            to the lot of one Thomas Watson.  
          In 1661, we find a patent granted to Wm. Chamberlaine 
            and - Dudley, Esq., for the sole use of their new invention of plating 
            steel, &c., and tinning the said plates; but whether Dud Dudley 
            was the person referred to, we are unable precisely to determine. 
            A few years later, he seems to have succeeded in obtaining the means 
            of prosecuting his original invention; for in his Metallum Martis, 
            published in 1665, he describes himself as living at Green’s Lodge, 
            in Staffordshire; and he says that near it are four forges, Green’s 
            Forge, Swin Forge, Heath Forge, and Cradley Forge, where he practises 
            his "perfect invention." These forges, he adds, "have barred all or 
            most part of their iron with pit-coal since the authors first invention 
            In 1618, which hath preserved much wood. In these four, besides many 
            other forges, do the like [sic ]; yet the author hath had no benefit 
            thereby to this present." From that time forward, Dud becomes lost 
            to sight. He seems eventually to have retired to St. Helen’s in Worcestershire, 
            where he died in 1684, in the 85th year of his age. He 
            was buried in the parish church there, and a monument, now destroyed, 
            was erected to his memory, bearing the inscription partly set forth 
            underneath.