T.VJ 



INDEX TO VOL. I. 



[ELKCTUH nv. 



Iron, prt>to-nitntc, 146, 



I., ii. | roto.rolpkate of, 146. 



JAMI*', Sir Henry, engraving proce**, 



161. 

 Juuv of flower*, photogenic nature of 



thr, 140. 



LIGHT, tu effect* on animals, 140. 



MARKING-INK, 142. 

 Merrnrialiting Daguerreotype*, 157. 

 Microscopic photography, 163. 



NICATITI and positive picture*, distinc- 

 tion hi tvtrrn, 151. 

 Negative collodioB pictures, 151. 

 Negative developing solutions, 152. 

 Negative fixing solutions, 152. 

 Negative picture*, 141. 

 Negative*, printing from, 152. 

 Negative, silver bath for, 151. 

 Negative*, varnishes for, 152. 

 Nitrate of silver, 145. 

 Nitric acid, 146. 



ORGANIC matter and alt* of silver, 140. 



PAPER positive* (see Printing from Neg 



live*), 153, tl leg. 

 Paper (see Printing also), 153. 

 Photographer*, early, 140. 

 Photographic apparatus, 143. 

 Photographic chemistry, 144. 

 Photographic engraving, 161. 

 Photographic registration, 163. 

 Photographs, to colour, 163. 



Photography, 140. 

 Photography by artificial light, 163. 

 Photography, celestial, 164, 165. 

 Photography, cleanline** required in the 



pursuit of, 140. 

 Photography, concluding remark* on, 



165. 



Photography, early history of, 140. 

 Photography, introductory experiment* in, 



140. 



Photography, microscopic, 163. 

 Photography, stereoscopic, liiJ. 

 Portrait, taking a, 147, el teq. 

 Positive collodion pictures, 146, tt teq. 

 Positive pictures, 141. 

 Potassium, cyanide of, 146. 

 Pretcsh'* engraving process, 162. 

 Printing, albumenisation of paper for, 



153. 



Prinling, choice of paper for, 153. 

 Printing, fixing the paper for positive, 154. 

 Printing from negatives, 152. 

 Printing of paper positives, finishing the, 



155. 



Printing, preparation of paper for, 153. 

 Printing, salting anil sensitising the paper 



for, 141, 153, 154. 



Printing, the copying process from nega- 

 tives, 154. 



Printing, the toning process, 154. 

 Process, Pretcsh's engraving, 162. 

 Process, Sir Henry JuuieV engraving, 



161. 



Process, the albumen, 159. 

 Process, the calolype, 158. 

 Process, the chromotype, 158. 

 Process, the collodion, 146. 



Process, the collodio. albumen, 160. 

 Process, the Daguerreotype, ! 

 Procen, the dry colloiliou, 160. 

 Process, the Fothergill, 160. 

 Process, the wax paper, 159. 

 Processes, photographic, 146, el tej. 

 Proto-nitrate of iron, 146. 

 Proto-sulphate of iron, 146. 

 Pyrogallic acid, 146. 



REGISTRATION, photographic, 163. 



SALTING process, 141. 



Salts of silver, II.'.. 



Sensitising the collodion plate, 148. 



Sensitive papei, 141, 154. 



Silver baths, 148. 



Silver baths, preparation of, 148, 149,151. 



Silver, chloride of, 141. 



Silver, nitrate of, 145. 



Silver salts, 145. 



Silver salts, changeable by light, 140. 



" Sitting for a portrait," 147. 



Sodium, hyposulphite, 141, 110. 



Stereoscopic photography, 102. 



Still, useful form of, 141. 



Supports for sitters, 147. 



TAKING a portrait, direction* for, 147. 

 Toning baths, 155. 

 Toning Daguerreotype*, 158. 

 Toning processes, 155. 



VARNISHES for negatives, 152. 

 Varnishes for positives, 150. 



WAX-PAPER process, the, 159. 



SECTION III. ELECTRICITY. 



ALKALIES, decomposition of, 195. 

 Animal electric currents, 197. 

 Animal electricity, 185. 

 Anode, the, 194. 

 Atmospheric electricity, 183. 

 Attraction and repulsion, 175. 

 Aurora Boreali*, 174. 



BATTERII-B, voltaic, 186 (See also name* 



of each). 



Battery, Leyden, 179. 

 Ilia-linn by the voltaic battery, 192, 193. 

 Hmling water by voltaic electricity, 192. 

 Breaking glass plate*, 182. 

 Brush, the electric. 174. 

 Bunsen's battery, 189. 

 Bunsen'* battery, experiment with a serie* 



of, 190. 

 Bursting glai* tube, 182. 



('ALLAN'S battery, 190, 



Calorific effect* of electricity, 181, 192. 



Carbon batteries, 189. 



Cathode, the, 194. 



Charging a jar and battery, 179. 



. 1 action in voltaic batteries, 186. 



eal effect* of a voltaic battery, 193. 



:eal theory, 186, 187. 

 Combustion of metals, 191. 

 Conducting power of liquid*, 187. 

 Conilucling power of mointurc, 177. 

 ( onilucting-wires, &c., 187. 

 Conduction, electric, 176 

 ' iirtor*. 177, 184. 

 Contact theory, 186, 187. 

 Crossc'i electrical experiment*, 19"'. 

 Cronse's electro-cbunical expel imenti, 



I'Ji. 

 Cylinder electrical machine, 170. 



DANITLL'* battery, 188. 



Daniell's battery, experiment with a series 



of, 190. 



Davy, Sir Humphry, experiments, 195. 

 Death by lightning, is I. 

 Decomposition of alkalies, 195. 

 Decomposition of water, 194. 

 Discharging a jar, 179. 

 Disruption discharge, experiment* on, 



191, 192. 

 Double electrical theory, 178. 



ELECTRIC brush, the, 174. 



Electric conduction, 1 76. 



Electric light, the, 191. 



Electric spark, the, 173. 



Eh -i-tric windmill, 175. 



Electrical lulls 176. 



Electrical induction, 178. 



Electrical kite, 183. 



Electrical machines, 1 70, et teq. 



Electrical repulsion, 170. 



Electrical (.hock, the, 184. 



Electrical theories, 177. 



Electricity a radiating force, 176. 



Electricity, atmospheric, 183. 



Electricity, calorific effects of, 181, 192. 



Electricity, chemical effect* of frictional, 



185. 



Electricity, frictional, 169. 

 Electricity from fur, 170. 

 Electricity from glass, 169. 

 Electricity from paper, 170. 

 Electricity from sealing-wax, 169. 

 Electricity, intensity of, 176. 

 Electricity, luminous effects of, 181, 191. 

 Electricity, mechanical effects of, 181. 

 Electricity of nines, 185. 

 Electricity, production of, 169. 

 Electricity, voltaic, 186. 

 Electro-chemical decomposition, 194. 

 Electro-chemistry, 193, */ ieq. 



Electro-decomposition (See Electro-Me- 



tallurgy). 

 Electrodes, 194. 



Electro-gilding (See Electro-Metallurgy) 

 Electro-metallurgy, 197 (See separate 



Index). 



Electrometers, 176. 

 Electrophorui, 172. 



Electro-plating (See Electro-Metallurgy). 

 Electroscopes, 176. 



Electrotyping (See Electro-Metallurgy). 

 Experiments with Leyden battery, various, 



181, 182. 



FISHES, electrical, 185. 

 Forces of nature, 197. 

 Franklin's kite experiment, 183. 

 Frictional electricity, 169. 



GALVANI'S experiments, 186. 



Galvanometer, the, 195. 



Gas battery, Grove's, 191. 



Grove's ba'ttery, 189. 



Grove's battery, experiments with a series 



of, 190. 



Grove's gas battery, 191. 

 Gutta-percha machine, 172. 

 Gymnotus, the, liii. 



HART'S gas-igniting apparatus, 193. 

 Hydro-electric machine, 172. 



IGNITION by the electric spark, 1/5, 182 



Ignition of gas, 182, 193. 



Ignition of gunpowder, 181, 193. 



Ignition of wire, I'J2. 



Induction, 178. 



Induction, theories of, ISO. 



Infernal machine-, Kii-- ; .-in voltaic, 193. 



Is, production of, 1%. 

 Intensity of electricity, 176. 



