URNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



JULY, 1802. 



ARTICLE I. 



Compojltion of Writing Ink, pojjejfing the permanent Colour, and 

 other ejfential Properties, of the Ink ufed for Printing. In 

 Letter from Mr. William Close. 



To Mr. NICHOLSON. 



S I R, 



Dalton, May 25, 1802. 



IN thefecond volume of the Philofophical Journal, at p. 63, Preliminary ad. 



the preparation of indelible ink is announced. Such an article 



may juftly be confidered a defideratum. As I have for fome 



time directed my attention to the composition of permanent 



ink, I fend you a (hort memoir on the fubject, which was drawn 



up previous to the perufal of the above-mentioned notice, and 



intended for a future communication. 



THE welfare of individuals often depends very much on Permanent ink 

 the teftimony of writing. An atramentous compofition, pof- a . n , im , port ^ ntar " 

 fefling a permanent colour on paper, and fuch a degree of fervation A au- 

 infolubility, after deficcation, as not to fuffer any injury from the . ntic # eftimo- 

 expofure to humidity, or the application of fuch chemical pre- 



VolII.— July, 1802. L partitions 



