GENERAL INDEX. 



403 



California, geysers in, 2S9 

 gold deposits of, 297 

 quicksilver mines in, 293 

 Cameras for daguerreotypes, improve- 

 ment in, 134 

 Candles, manufacture of, 206 

 Canals, steam-power on, 23 

 Caoutchouc, its properties and appli- 

 cations, 96 

 Carbonic acid exhalations, latest re- 

 searches explanatory 

 of, 2S8 

 exhalations, 223 

 Carbonic oxide, pernicious effects of, 211 

 Carpet, Berlin wool, at the Great Ex- 

 hibition, 13 

 Cars, improvements in railroad, 23 

 " wrought-iron railroad, 43 

 Casks, metallic, 48 

 Castings, metallic, new method of ob- 

 taining elaborate, 50 

 Cat, domestic, origin of, 3-59 

 Cave, Mammoth, observations on, 230 

 Centrifugal action, application of to 



manufacturing purposes, 63 

 Changes of structure observed to take 

 place in arsenious acid and other 

 bodies, 171 

 CHANNING, W. F., 106 

 CHASE, JOHN, 81 

 Check-signal, railroad, 27 

 Chemical and general effects of inter- 

 ments in vaults and catacombs, 202 

 Chloroform, preservative influence of, 201 

 Chimneys, ventilation by, 86 

 Churns, atmospheriCj 76 

 Clay, granite, fire, 292 

 CLAUSSEN, M., 188 

 Climate, effects of vegetation on, 330 

 " arctic, 392 

 Clinochlore, a new species, 291 

 Clocks, American, cheapness of, 76 

 " electro-magnetic at Berlin, 103 

 " Button's patent, 76 

 " in the Great Exhibition, 15 

 Cloth, ancient, from the mounds of 



Ohio, 396 

 Clouds, and equatorial cloud rings of 



the earth, 387 



Coal, Albert, Hillsboro', N. B., 307 



" bed, immense in Ohio, 305 

 " bituminous, analyses of the ashes 



of, 306 



" bituminous, electricity of, 307 



" deposits in Iowa and Oregon, 302 

 " formation of New Brunswick, 



discovery of fossil fishes in, 310 

 " formation of Ohio, discovery of 



fossil fishes in, 311 



" in China, 303 



" oil, use of rectified, 201 



" production of artificial mineral, 200 



" traces of vegetation in, 308 

 " value of different kinds for steam 



purposes, 200 



Collodion, substitute for, 199 

 Color of substances and their magnetic 



properties, connection between, 116 



Colors, classification of, 120 



Compass, effect of funnels of steamers 



upon, 108 



Conglomerates, origin of, 248 



Cooperage, machinery for, 51 



Copper ores, certain method of assaying, 180 

 certain method of assay- 

 ing by electro-chemical 

 action, 182 



production of, 300 



Comets discovered in 1351, 373 



Coral reefs of Florida, 271 



" island, the completed, 277 



Cornstalk harvester, 84 



Cranes, wrought-iron tubular, 40 



Crinoidea, distribution of in the West- 

 ern States, 311 

 Daguerreotypes, enamel for, 131 

 improvements in cam- 

 eras for, 134 

 in colors, 126 

 of the sun and moon, 135 

 DAMSEL, H. L., 43 

 DANA, PROF. JAS. D., 279, 340, 342 

 DAVIS, LIEUT., 262 

 Dead, fashions for, 79 

 DESOR, M., 250, 251 

 Diluvial agencies in earlier geological 



periods, 249 



Doctrine of specific organic centres, 357 

 Dolomite, formation of, by action of 



magnesium vapors, 171 



Donarium, a new metal, 176 



DOUGLAS, SIR HOWARD, 56 



Drift deposits, parallelism between 



Europe and North America, 250 

 " of North America, fossils from, 317 

 DUMAS, PROF., 167, 211 



Dunes, existence of on the shores of 



the North American lakes, 251 



Earth, clouds and cloud-rings of, 339 



" demonstration of the rotation of 



by means of a pendulum. 155 

 " demonstration of the rotation of 



by means of two pendulums, 158 

 " new method of demonstrating 



the rotation of, 153 



" Wylde's model of, 80 



Earthquakes, on, 283 



reported in 1851, 285 



Earthquake in Chili, phenomena at- 

 tending, 287 

 Eclipse, total solar, of July 28, 1851, 381 

 Eggs and bones of a gigantic bird found 



in Madagascar, 313 



" fossil of snakes, 317 



Electric light, Staite's patent, 99 



Electro-magnetic locomotive, Page's, 99 

 Electro-magnetic traction on railways, 100 

 Elephant, extraction of the tusks of 



an, 355 



fossils from the drift of 



North America, 



EMMONS, DR. E., 222 



Engine, caloric, 18 



carbonic gas, 35 



double piston, steam, 21 



electro-magnetic, Page's, 100 



