A Manual Of Photography

INDEX. 317 Development of Daguerrian image, 249. -------of image on waxed paper, 233. Diamond, Dr., improves collodion, 267 Discoloration, spontaneous, of paper, 191. Dish for washing, &c., 204. Diurnal variations of photographic in- tensity, 122. Draper, Dr., on chlorine and hydro- gen, 10. -------on images produced on glass, 167. -------on portraiture, 104. Dynactinometer, the, description of, 160. Eastlake, Sir C. L., on photographic patent, 312. Egg, white of, to iodise, 276. -------used on glass and porcelain, 30. Electro-chemical experiments, 295. Elliptical mirror, patented for por- traits, 107. Ellis, Mr., on protonitrate of iron, 268. Englefield, Sir H., on the calorific rays, 5. Engravings, sensitive paper for copy- ing, 209. Etchings on glass plates, 283. Ether, sulphuric, for dissolving gun- cotton, 259. Everard Blanquart on albumen, 276. on calotype, 229. Exposure in the camera, 221. Experiments with bromine, &c., 256. Feathers, paper for copying, 209. Ferrotype, the, 76. Fixing daguerreotypes, 43, 2ol. processes, 211. Fizeau, M., on bromine water, 243. on use of chloride of gold, 251. Flacheron's process, 233. Flowers, colouring matter of, 64. Fluoride of potassium, 282. •------ of silver, 132. Fluorotype, the, 84., Foci, actinic and luminous, 150. Focimeter, the, description of, lo9. Folding camera obscura, 203. Foliage, to copy, 299. Forms of camera obscura, 200. Frames for copying, 197. Frankland, Dr., on the combination of metals with organic radicals, 135. Fry, Mr., modifies collodion process, 259. -------uses collodion and gutta-per- cha, 103. Fulminate of silver, 134. Fyfe, Dr., on phosphate of silver, 133. Gallo-nitrate of silver, its use, 220. Gaudin, M., on yellow rays, 147. Gay-Lussac and Thénard on clilorine and hydrogen, 10. Glacial acetic acid, its use, 265. Glass plates employed, 100. , to clean for collodion, 261. -------, to coat with albumen, 277. -------, to coat with collodion, 262. ---------, to excite, 263. Gold, action of solar rays on, 11. , chloride of, employed in fix- ing, 251. -------, salts of, as photographic agents, 95. Goddard, Mr., employs bromine and iodine, 107. Grape sugar used with albumen, 282. Griffin’s form of Archer’s camera, 273. Guaiacum, gum, action of light on, 5. Guerin’s Hungarian solution, 246. Gun-cotton for collodion, 259. -------, to prepare, 260. Gutta-percha and collodion, 103. used by Mr. Fry, 266. Harrup, Fobert, on chemical action of light, 5. Heat of solar rays supposed by Count Rumford to producechemical change, 5. producing radiations, 118. Heliochromes, 176. Heliograph of Mr. Jordan, 155. Heliography of M. Niepce, 13. Heliographie images, relation of, to coloured light, 174. Herschel, Sir J., adds to rays to visible spectrum, 117. experiments on paper, 189. photographic camera, 201. photographic processes, 51. --------process on glass plates, 100.