The Hartlib Papers

Title:Letter, Cheney Culpeper To Hartlib
Dating:25 January 1647
Ref:8/31/1A-3B: 3B BLANK
[8/31/1A]

Mr Hartlib;
      I cannot be in towne this weeke, nor from the towne the nexte, ; I shall (for the [letters deleted] presente) onely tell you, that I am very confidente (from those seuerall touches which you haue giuen me of Mr Petits ingenuity), that bothe his multiple writinge & in his printinge is to be done by by that instrumente which (you knowe) I firste learned out of a booke which you lente me & had afterwardes made by [letter deleted] your nayghbor, I meane the parralellogramme instrumente; The inlarginge or lesseninge of any mappe is this laste weeke tryed by it; & there hathe beene suche an essay of multiple [letters deleted] writinge with it as (from <what> is tried & what I reade in your letters) the whole thinge is plaine to me, I fully see the way of writinge sixe copie coppies with one motion, & I apprehende more then a be possibility of [letter deleted] writinge yet more; I say againe, I will not be certaine [letters deleted] that it is his way, but I cannot be more confidente then I am that it will proue a way bothe[altered] easy & certaine; The chiefe addition which Mr Petit hathe made of to it is, some kinde of brasse pen not alltogether vnlike the ruling pen but somewhat otherwise made, which (being
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filled will inke will continue writinge a [letter deleted] longe time without a recreute & this is the advantage by which the copies will be writte in a shorter time then <by> another that [word deleted] resortes often to the ynke horne will write one coppy; & <to> proue that they are some suche pennes, yf you ve viewe the copies you will (I beleeue) finde all the strokes of one f bigen bignes; The right placinge of these pennes by screwes or otherwise & of the papers vnder them, a very little practise will discouer;
Towardes makinge this instrumente fitte for printinge there must be added to th'invention, of <of> [suche? altered] a grownde of waxe & resin mixed with Ceruse or red leade et cet according to the color that is shall be accownted[altered] beste; suche a grownde I say, as is used for Etchinge, that soe the a sharpe pointe woorkinge throwgh it to the mettall may leaue the letters fitt to be firste eaten by Aquafortis & then <the> plate thus eaten, will afterwarde printe 30: or 40: or more copies; The greateste[altered] difficulty, which yet I soone fownde, was howe to make the Paralellogramme [word deleted] write backwarde, that soe it mighte (like the ordinarie printeries) printe the write wright way & it is done thus
      b [two adjoining diamond shapes] r
                      a
Let the fixed center of the paralellogramme be in the middle of :a: & then yf the hande
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write letters [word deleted] [forwarde? MS torn] at :r: the <very> same kinde of hande & letters will be written backwarde at :b: & that in a greater or lesse proportion accordinge as the paralellogramme is ordered; There is yet (I consceiue) another way then by etchinge, when the letters shall be defended & the reste of the plate onely, soe a eaten, as that the letters shall [letters deleted] not be like the hallowenesses in etchinge, but stande out like the letters of an pri a ordinary[altered] printery, off of this laste I am not soe sure, but a greate <deale> confidente; The instrumente is very applicable to manye other endes; I conceiue (by carrijnge the hande ouer a glasse or vpon the backside of a parchement in a darcke roome) that one that [letter deleted] can but runne (with a [blunte? MS torn] pointe) runne ouer <or vpon> the lineamentes or strokes that are before be him, shall be able (more [letter deleted] then the firste inventer, (mentioned in your booke) promised) to make an exacte picture of any thinge & yet see, neyther the thinge nor his owne woorke; I haue spente my paper & time vpon this subl Subjecte;
Yf it were not too muche I cowlde wishe Mr Wheeler wowlde gratify you with his way of keepinge [fleshe? altered], which being to be done onely by an intence [letter deleted] colde & drines, might be apl applied not onely to the application preseruation of many [letters deleted] other thinges, but (which I moste valewe it for) to hygh conclusions in philosophy, I meane Chimistry[altered], & that not in the ordinary way of distillation, but in that hidden & inwarde [left margin:] motion which [letter deleted] nature makes within herselfe; but I am out of my way Yf you aske Mr Pettit whether his printinge will not be onely, like written hande & not like the printinge character, you will (by it) see whether I haue hit right
                      Your aff: frind
                           Ch: C:
Ian: 25th
   47
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For Mr Hartlib at
      Dukes place
       [flourish]
[8/31/3A]

                  postscript
I haue missed, in not takinge the right center of the rule or parallellogramme; but let not cause you to diffide, for as I haue fownde my error, soe (yf I had time), I am confidente, I cowlde nowe [shewst?] set downe the right way; but this is shewed better by ocular demonstration then by discowrse or writinge, & more of this when I see you
      [squiggles] b [diagram] r [squiggles]
                        a
suppose a: to be fixed; & then whatsoeuer you write right forwarde [with?] :r: will be [word deleted] written backe warde (& soe to be reade vpon the other side of the paper) by :b:; & <will> (by that meanes) printe forwarde & the right way, eyther by etchinge or perhaps by [the? MS edge] other way