156 THE RISE AND PROGRESS OF PHOTOGRAPHY. 
body, such as paper, glass, wood, porcelain, ivory, &e., &c. thus 
the image is no longer reve ersed, but seen in its right position 
The oe ss as it now stands may be described in a few wor 
water the print is a: thert ones through a solution of 
sine, aad and dried. 
The first process of photo-mechanical printing that I shall speak 
sl is photo- lithography. Among the early records of the process 
e find by a letter from Monsieur Lacon in December, 1874, 
that a modest iia printer as far back as 1842 produced, 
by means not kno r then forgotten, many beautiful photo- 
graphic etietersy on atonie ; he worked quietly and unheeded 
in his leisure hours, and to the fact of his pores modesty an 
humble position we owe the misfortune of not being acquainted 
to render honor to whom honor is due, for of all the many 
treatises published on these processes o ily one does justice to 
the memory, or even mentions the early labours of the workman 
negative, and subsequ gente ashed it in ay those p 
vrs: by light remained on the stone insoluble, and the non- 
and still are the recognized media for the proper carrying 
out of Sota lithewahy Among the — prod hegeta: may be 
mentioned, Asser of Amsterdam, Colonel Sir H. James, Newton, 
and Osborne, in England, Simonau and Too ovey of Bruxelles, . 
Captain Waterhouse, in India, and man 
Asser used starch spread upon paper and. sensitized with 
bichromate—the latter substance being the salt used by all for 
