on a New ComtnLctlon* 203* 



J&ow the blanks may be filled to the best advantage, and 

 how, by means of these, an extensive code of signals m;iy 

 be formed to suit the proposed telegraph, and considerably 

 to abbreviate its operations. But I shall not pretend to give 

 an example of such a code at large, for its contents must 

 necessarily vary according to the circumstances of the 

 coimtry where such establishments may be made, and the 

 arrangement of it must be left to the judgment of the per- 

 sons who direct them. 



Different Modes of forming a Code of Signals. 

 Let any number of words and sentences that are most 

 likely to occur in practice, be written in regular order to the 

 extent judged necessary, and if these do not exceed 300, let 

 them be divided into sections according to a method ex- 

 plained in the following table. 



Tiien let one of the blanks denote that *' The ensuing 

 signal uill he read in the first section;' — Let a second blank 

 denote that " The ensning signal ivill hs read in the seond 

 signal," and su on ; and thus may any list of words and 

 sentences, under three hundred, be represented by two 

 vlianges on the telegraph, exclusive of all unusual or unex- 

 pected intcliigence, which may be communicated alphabeti- 

 cally by the ordinary key. , 



But when the number of words and sentences required 

 exceeds 300, the signal-book umst be divided into two parts, 



<h5 



