Show J I I within twenty years hince came to be a prominent cheaib C cal I in in photography there liale a of course beena thousand and strictly chemical chera ical improvements in in every bap of he the prices pro proc ces during the last ten years ears tho the quantity of the tile mai material erial has bai been carefully caie fully studied all and d artista artieta have discovered covered dit just tho right combinations of guncotton gun cotton alcohol and ether to use the he best node mode of making this film sensitive I the best material for deve developing lopi n 11 the shadows when 13 upon it n tho the I manipulation best adapted to re rf I move more defects hi in the impre impression tha best that will set the lines and more than thin alit all the mosi impi improved oved and kul handling of the glass aa as a type to print with and the modes of onda in g and piercing the pictures throve fr from the glasa to the ine paper hiv i ben been studied with per spasm I I I I |