TK524.V 



TO 



0. W. SIEMENS, ESQ., 



F.R.S., Memb. I.C.E., Memb. I.M.E., Etc. Etc. Etc. 



MY DEAR SIR, 



Allow me to dedicate this little Book to you. There 

 are two reasons which urge me to do so : first, that there 

 is no name more intimately associated with the progress of 

 Telegraphy, both in England and on the Continent, than your 

 own ; and secondly, that it gives me an opportunity of show- 

 ing you how sensible I am of the many instances of kindness 

 which I have experienced at your hands in affording me 

 facilities for prosecuting my studies in this and other branches 

 of applied science. 



Believe me, 



My dear Sir, 



Yery sincerely yours, 



EGBERT SABINE. 



London, January, 1867. 



JV1510967 



