408 



INDEX 



PAGE 



Caspian Sea, extent of, 341 



Caustics, chemistry of, 244 



Cells of bees, on the formation of, 362 

 Cement, new, 89 



Cements, simple, preparation of, 278 

 Chemical action and magnetism, 123 

 Chemical science, thoughts on the 



progress of, 199 



Chemistry of gunpowder, .246 



Chess, transmutation of wheat into, 353 

 Chlorine as a disinfectant, prepara- 

 tion of, 232 

 Cholera corpuscles, on the origin of 



the so-called, 355 



Church of St. Isaac, 82 



Clay retorts, use of in gas-making, 87 

 Cleavage, slaty, origin of, 305 



Coal-oils, improvements in the man- 

 ufacture of, 235 

 Coal-series of Pennsylvania, plants 



of, 331 



Coal-tar, colors obtained from, 233 



Coast of Sicily, elevation of, 307 



Coffee, as an article of diet, 270 



Color, laws of, 160 



" in birds and animals, cause of 



change, 360 



Collodion, best method of preparing, 273 



Comet, Douati's, 383 



occultation of a star by, 395 



Comets, density of, Vaughan on, 389 



" luminous, theory of tails of, 



\Vinslow on, 386 



Comets, periodical, list of, 12 



Copper, presence of in the tissues of 



plants and animals, 284 



Corals, growth and classification of, 372 

 CROSSE, Andrew, experiment of, 107 

 Crystals, geology of, 340 



Dams, vibrations of water in falling 



over, 181 



Deodorizer, permanganate of potash 



as a, 232 



Devonian trees, 331 



Diapason, natural, 184 



Digestion, new experiments on, 356 



Door-lock, Marston's improved, 94 



DRAPER on the nature of flame, 128 



Earth, distribution of heat in the in- 

 terior of, 167 

 Earth, gradual desication of, 395 

 " internal heat of, 311 

 Earthquake manifestations in Chili, 



S. A., 336 



Earthquake phenomena in southern 



Italy, 335 



Earthquake, submarine, 336 



Earthwork, Warner's new method of 



estimating, 196 



Ecliptic, charts of, 394 



Education, scientific, Faraday on, 97 

 Electric discharges in rarefied air, 109 

 Electrical light, 105 



" cost of, 106 



Electricity and light, 127 



u 

 u 

 u 

 u 



lighting gas by, 



104 



of nerves and muscles, 102 

 rotation produced by, 102 

 use of for producing local 

 anaesthesia, 108 



PAGE 



Electrotyping, improvements in, 109 

 Electro-motive force of various bat- 

 teries, 106 

 Elements, equivalents of, 202 

 Elephas, fossil remains of the genus, 328 

 Elliotype process, the, 147 

 Enamels, photographic, 143 

 Engines, propeller, improvement in, 51 

 Engraved plates, method of increas- 

 ing the durability of. 195 

 Engraving, photoglyphic, 149 

 Equation, personal, 169 

 Ethereal medium, existence of, 169 

 Evaporation, rate of in different 



steam-boilers, 54 



Evaporative power of boiler-tubes of 



different metals, 58 



Egypt, geological discoveries in, 32G 



Ferrum-reductum, preparation of, 224 

 Filtration through sand, 231 



Fire, protection of wood from, 62 



Fish-scales, analysis of, 262 



Fishes, migration and naturalization 



of, 374 



FITTS'S automatic boiler-feeder, 50 



Flame, nature of, 128 



Flour, detection of adulterations in, 262 

 Fluorescence, produced by the au- 

 rora, 126 

 Force and matter, relations of, 126 

 Frost, on the protection of plants 



from, 345 



Fungi of New England, 345 



" on the so-called cholera, 355 



Gas and sand, heating by, 88 



" on railway cars, 59 



" sonorous action of burning, 184 



Gastric juice, 356 



Gems, artificial production of, 210 



Geology, recent progress of, 294 



surface, illustrations of, 296 



Glands, variations of the color of the 



blood in, 375 



Glands, salivary, 356 



Glass, soluble, 281 



" tubes, resistance to pressure, 58 



Glonoiue, preparation and properties 



of, 267 



Glucose, chemical changes of, 250 



Glue, liquid, 89 



Glycerine, economical applications 



of, 271 



Glycerine, pure, characteristics of, 273 

 Governor, Silver's marine, 51 



Grain-cleaner, Boothe's improved, 91 

 GRIFFITH'S theory of chemical radi- 

 cals, 210 



Hammers, steam, 82 



Hayti, geology of, 299 

 Heat, distribution of in the interior 



of the earth, 167 



Heat, radiant, experiments in, 165 



Heliostat, hand, construction of, 157 



Hermaphroditism, 366 



Horizon, new artificial, 173 



Horse, fossil remains of, 324 



HUGHES'S Telegraph, 



111 



Human race, evidence of the anti- 

 quity of, 326 



