tJMAP. I.] ^RITIUG BY CIPHER EXPLAtNED. 



223 



omnia per omnia (anything by everything),^ provided only 

 the matter included be live times less than that which 

 includes it, without any other condition or limitation. The 

 invention is this : first let all the letters of the alphabet bo 

 resolved into two only, by repetition and transposition ; for 

 a transposition of two letters through five places, or different 

 arrangements, will denote two and thirty differences, and 

 consequently fewer, or four and twenty, the number of letters 

 in our alphabet, as in the following example. 



A BILITERAL ALPHABET, 



Consisting only of a and b changed through five places, so as to represent 

 all the letters of the common alphabet. 



Thus, in order to write an A, you write five a's, or aaaaa ; 

 and to write a B, you write four a's and one h, or aaaab ; and 

 80 of the rest. 



And here, by the way, we gain no small advantage, as 

 this contrivance shows a method of expressing and signifying 

 one's mind to any distance, by objects that are either visible 

 or audible — provided only the objects are but capable of two 

 differences, as bells, speaking-trumpets, fireworks, cannon, &c. 

 But for Avriting, let the included letter be resolved into this 

 biliteral alphabet ; suppose that letter were the word fly, it 

 is thus resolved : 



F 

 aabab 



L 

 ababa 



T 

 babba. 



Let there be also at hand two other common alphabets, 

 differing only from each other in the make of their letters ; 

 so that, as well the capital as the small be differently shaped 

 or cut at every one's discretion : as thus, for example, ia 

 Roman and Italic ; each Boman letter constantly represent- 

 ing A, and each Italic letter B. 



^ For this cipher is practicable in all things that are capable ct two 

 di&renoea. 



