354 



IXDEX. 



Phenic acid, use of 238 



Phosphorus, migrations of 235 



Photographic ghosts 185 



" printing, improvement 



in 187 



Photographing natural colors . . . 182 

 Photographs, " diamond cameo " . 189 



electrical I'M 



" of the electric spark . 201 



Photography and Physiology .... 186 



applied to topography, 211 



improvements in . . . 185 



" Wothly's improvements 



in 186 



Photometry, discovery in 176 



Photo-sculpture 183 



Physiological errors in astronomi- 

 cal observations 1(39 



Pianos, self-instructing scale for . . 76 

 Pictures, Petteukofer's process of 



restoring 236 



Pipes, water, action of on flow ... 67 



Planetary law, new 333 



Planets, new, for 1864 332 



Plants, green coloring matter of . . 313 

 Plumb-line deviation, remarkable . 146 

 Pneumatic despatch, improved ... 42 



" railway 40 



Poisoning, vegetable, use of char- 

 coal iu 246 



Poisons, detection of by dialysis . . 247 

 Pole, North, new expedition to ... 340 

 Potash, the available sources of . . 73 



Probe, Nelaton's 193 



Projectiles, measurement of the ve- 

 locity of 117 



Pump, common, simplification of . 209 

 Pyroxilinc paper, electrical proper- 

 ties of 121 



Quicklime, new use for 



69 



Race, aboriginal, extinction of an . 326 

 Radiations, luminous and obscure . 178 

 Railway car-trucks, improved ... 43 



<( pneumatic 40 



Rainbow, artificial 172 



Rooks, breaking- by fire 160 



Rubber, vulcanized, waste of ... 70 

 Rust, prevention of on iron .... 50 



Salmon, propagation of 317 



Sands, shifting, settlement of ... 66 



Sap, maple, How of 64 



Sculpture, by colored light 172 



through photography . . 183 

 Sea, absorption of terrestrial heat 



by 157 



Sea water, action of on iron and 



copper 48 



Serpents, specific against the bite of, 330 



Sewage, utilization of 60,237 



" " dangers from, 322 



Sexes, production of at will .... 324 



" temperature of 324 



Shells, bomb, tilled with compressed 



air 226 



Ship of the future 84 



Ships, impregnable 84 



" of steel 23 



| Ships of war, improvements in . . . 86 



Shot, effect of on iron plates .... 88 



" percussion of on iron targets, 100 



Signs, plus and minus origin of . . I'.'o 



Silk, naturally dyed 72 



Sirius, companion of 333 



.Slag of iron furnaces, utilization of, 70 



Snake, largest described 329 



Soap and candles, improvements in, 244 

 Soil, heating effects of the sun on . 151 

 Solution, photographic cleaning-, 



Lea's 145 



Solar radiations, intensity of ... 160 



" spots, origin of 180 



" system, stability of 337 



Solids, cooling of by tension ... 160 



Sound as a time measurer 191 



" determination of velocity of, 191 



" produced by electricity ... 118 



Sounding apparatus, new .".... 77 



Spectroscope, construction of ... 263 



Spectrum analysis, recent discoveries 



in 251 



" theory and appli- 

 cation of ... 261 

 thoughts on re- 

 sults of .... 262 



of a comet 332 



solar, new researches on . 205 



Splints, rattan, new 78 



Spontaneous generation, researches 



on 330 



Springs, hot, phenomena of .... 269 



Stars, change of color in 336 



" fixed, recent discoveries in 



relation to 253, 256 



" occultation of the spectrum 



of 267 



" shooting, what we know of . 334 



Statistics, curious vital 327 



Statues, chemical preservation of . 24(5 

 Steam, condensation of in cylinders, 27 

 expansive working of ... 26 

 " new formula for calculating 



pressure of 150 



" new mechanical action of . 38 

 " superheated, production of 



steel by 47 



Steam boilers, improvements in . . 31 



" engine, economy of 27 



Steel, Cazanave's process 45 



" improvements in the manufac- 

 ture of 45 



" ships 23 



Stereoscope without lenses .... 173 



Stereotrope, The 174 



Straight edges 22 



Sugar, maple, manufactured in the 



United States 63 



produced in animals by cold, .">'j:> 



Sun, central, of the universe .... 148 



" chemical action of rays of . . 181 



" effects of on soil and air . . . 151 



" gold in 181 



" heat of 142 



" physical aspect of 179 



'* theory of the constitution of . 337 

 Sun's heat upon the earth, numeri- 

 cal value of 160 



Surfaces, flat 22 



