44 The Marquis of iVorceJier's 



make him reveal the feeret, the letter having been inter- 

 cepted, and firft opened by the enemy. 



II. Seals private and particular to each Owner. 

 How ten thoufand perfons may ui'e thefe feals to all and 

 every of the purpofes aforcfaid, and yet keep iheir fecrtts 

 from any but whom they pleafe. 



III. A One-live Cypher. 



A cypher and character fo contrived, that one line, with- 

 out returns and circumflexes, (lands for each and every of the 

 twenty-four letters ; and as ready to be made for the one 

 letter as the other. 



IV. Reduced to a Point. 



This invention, refined and lb abbreviated, that a point only 

 fhoweth didinclly and nVnificantly any of the twenty -four 

 letters ; and thefe verv points to be made with two pens, fo 

 that no time will be fo(t, but as one finger rifeth the other 

 may make the following letter, never clogging the memory 

 with feveral figures for words and combination of letters; 

 which with eafe, and void of confulion, are thus fpeedily and 

 pun&ually, letter for letter, fet clown by naked and not mul- 

 tiplied points. And nothing can be lefs than a point, the 

 mathematical definition of being cujus pars nulla. And of a 

 motion no fwifter imaginable than femiquavers or relefheSj 

 yet applicable to this manner of writing. 



V. Varied Jignificantly to all the Twenty-four Letters. 

 A way by circular motion, either along a rule or ringwife, 

 to vary any alphabet, even this of points, fo that the felf- 

 fame point individually placed, without the leaft additional 

 mark or variation of place, {hall (land for all the twenty-four 

 letters, and not for the fame letter twice in ten fhects writ- 

 ing; yet as eafily and certainly read and known, as if it flood 

 but for one and the felf-fame ietter constantly figniiied. 



VI. A mute and per/eft Difcourfe by Colours. 

 How at a window, as far as eye can difcover black from 

 white, a man may hold difcourfe with his correfpondent, 

 without noifc made or notice taken ; being, according to 

 occafion given and means afforded, ex re natd, and no need 

 of proviuon beforehand; though much better if forefeen, 

 and means prepared for it, and a premeditated courfe taken 

 by mutual confent of parties. 



VII. To hold the fame by Night. 

 A way to do it by night as well as by day 3 though as dark 

 as pitch is black, 



VIII. To 



