A manual of photographic chemistry : including the practice of the collodion process . f Silver, their Photogra-phic action, 16 ; theory of theirreduction by developer, 30 ;directions for obtaining metalfrom, 274. Sensitiveness, term explained, 81. Sensitiveness of Collodion film, ^ causes influencing, 81; explained,93 ; preservation of, 217. Sensitive surfaces, general theoryof, 20. Sensitive paper, theory of prepa-ration, 136; details of prepara-tion, 202; with Ammonio-Ni-trate, 206. Silver, estimation of, in NitrateBath*, 273; recovering fromwaste solutions, 273 ; reductionfrom Chloride, 27
A manual of photographic chemistry : including the practice of the collodion process . f Silver, their Photogra-phic action, 16 ; theory of theirreduction by developer, 30 ;directions for obtaining metalfrom, 274. Sensitiveness, term explained, 81. Sensitiveness of Collodion film, ^ causes influencing, 81; explained,93 ; preservation of, 217. Sensitive surfaces, general theoryof, 20. Sensitive paper, theory of prepa-ration, 136; details of prepara-tion, 202; with Ammonio-Ni-trate, 206. Silver, estimation of, in NitrateBath*, 273; recovering fromwaste solutions, 273 ; reductionfrom Chloride, 275; stains, re-moval of, 276. Solar spectrum, 41. Spherical aberration, 54. Spots on Collodion plates, 198. Stains, Silver, removal of, 276. Standard acid solution, prepara-tion of, 167. Stops, use of, 55. Strength of acids, tables of, 276. Sulphuric Acid, table of strengthof, 276. Sulphate of Quinine, absorptionof rays by, 143. Syruped Collodion film, 221. Symbols, use of, 223. Test-papers, use of, 276. Varnishes for Collodion Photo-graphs, 192. Weights and Measures, table of, HUMPHREYS JOURNAL OF THE DAGUERREOTYPE AND PHOTOGRAPHIC ARTS. The above named Publication is well known as the best and most valuable one devoted to the Photographic Science in this country. Humphreys Journal made its first appear-ance Nov. 1st, 1850, and consequently is the first and oldest serial offered to the Photogra-phic world. The art of producing Portraits and Landscapes by means of Light, has recently taken anew and enlivening impulse, which will in all probability lead to important and interestingresults. No practical Daguerreotypist, Photographer, or amateur should be without themeans at hand for securing all of the information upon this subject. Each should be readyto receive and apply the improvements as they may be developed. In order to accomplishthis, it is a matter of great importance to the Practitioner or Experimenter that he shouldhave a reliable medium through which he can obtai
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Keywords: ., bookcentury1800, bookdecade1850, bookidgri33125003203441, booksub
