Reprinted　and　published　at　the　Great　Seal　Patent　Office；　1858。
  。。。＇
  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；*
  ＇footnote。。。
  Among　the　early　patentees；　besides　the　names　of　Sturtevant　and
  Rovenzon；　we　find　those　of　Jordens；　Francke；　Sir　Phillibert　Vernatt；
  and　other　foreigners　of　the　above　nations。
  。。。＇
  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
  neighbourhoodcoal　in　some　places　lying　in　seams　ten　feet
  thickironstone　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　smallnot　more　than
  three　tons　a　week　from　each　furnaceDudley　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；*
  ＇footnote。。。
  Mr。　Parkshouse　was　one　of　the　esquires　to　Sir　Ferdinando　Dudley　（the
  legitimate　son　of　the　Earl　of　Dudley）　When　he　was　made　Knight　of　the
  Bath。　　Sir　Ferdinando's　only　daughter　Frances　married　Humble　Ward；　son
  and　heir　of　William　Ward；　goldsmith　and　jeweller　to　Charles　the
  First's　queen。　　Her　husband　having　been　created　a　baron　by　the　title
  of　Baron　Ward　of　Birmingham；　and　Frances　becoming　Baroness　of　Dudley
  in　her　own　right　on　the　demise　of　her　father；　the　baronies　of　Dudley
  and　Ward　thus　became　united　in　their　eldest　son　Edward　in　the　year
  1697。
  。。。＇
  〃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