25 



about my, or rather Mathews' .ureen tint. It is largely used 



in the United States, but I sold it there for a trifle, and here 



our large banks move slowly, but have all adopted it, so in a 



thev will have it in use, and pay me something. I hope 



to sell it in England, but nothing definite has as yet come 



about, and have offered it to the Russian government through 



a friend. As yet it has been rather more trouble than profit." 



The following letters are historically interesting as the 



Canada banknote printing tint was the parent of the greenback: 



"CiTY BANK, MONTREAL, 



41 March 2, 18.'. 7. 

 -T. STERRY HUNT, Ksq., 



"Chemist to the Geological Survey : 



11 Sir: The attention of the Board of this institution 

 having been din cud to the necessity of some further protec- 

 tion against the possibility of counterfeiting, altering or pho- 

 tographing banknotes, I beg most respectfully to ask your 

 opinion as to the various tints, colors, and chemical agents 

 which have been and are now employed, as a means of pro- 

 tection against these frau 



il As your deep research in all that pertains to chemistry 

 and your high reputation as a chemist will give to your 

 jions on this important subject a character for reliability, 

 which cannot fail to be valuable on public grounds, ma I 

 beg the favor of your consideration of this matter at voiir 

 earl ;. ? 



Yours very i- . lly, 



\Vn.LiAM \VOKKMAN. President.' 1 ' 



" M I-. .July 1. 1S57. 

 WILLIAM WORKMAN, i 



" President of the City Bank. 



" Sir: I have, agreeably 1601 in your letter of 



the 2d March, made a sei un 



terfei ting and alteration o -arlv with refer- 



ence to the dangers to be :n photography, and 



don. 



