INDEX. 



PAGE 



Absorption, physics of ...... 171 



" rapidity of 294 



Acoustic phenomena 179 



Acoustical apparatus ISl 



Aerial loconiotlon 58 



Africa, geography of 355 



little folks of 325 



Agassiz, L. Botany of Brazil . .331 

 " Climate of «' . . 351 



" Geography of" . . 357 



" Geology of " 269, 270 



" Zoology of " . . 341 



Age of stone 303 



Air, atmospheric, ingredients of . 1S8 

 Air colls in birds, function of . . 3','1 



Alloclase 218 



Aluminium, reduction of, by zinc . 188 



American races 313 



Ammoniacal gas, condensation of . 214 



Amory's furnace 07 



Anesthetic agents, new . . 303, 304 



Ancient bronzes 303 



Ancient mining 303 



Aniline dyes 96,205,210 



Animal food, digestion of ... . 293 

 " life, origin, and develop- 

 ment of 279 



Antozone 213 



Aqueduct, Washington 35 



Artesian Wells of Chicago . . . 250 



Associations, scientific 5 



Astronomical apparatus, improved. 349 



Atlantic telegraph, 13 



Atmosphere as a denuding agent . 250 

 Auroral arches, height of . . . . ;i52 



Belgian bone-caves 358 



Birds, temperature of 322 



Bitumen, from Colorado .... 257 



Bolides 341 



Bone-caves-of Belgium 358 



Borax in California 219 



Botany of Brazil 331 



Brain, chemical constitution of . . 197 

 " of implacental mammals . .276 



Brazil, botany of 331 



" climate of 351 



" geography of 357 



" geology of 209, 270 



" zoijlogv of 314 



Bridge, Frith of Forth 34 



" suspension, Cincinnati, . 35 



Bridges, great 30 



" steel 37 



Canal across the Isthmus of Da- 



rien 358 



Canal, Suez 33 



Cane sugar, test for 215 



PAGE 



Cannon, casting of a twenty-inch . ill 

 " Prof. Treadwell's improve- 

 ments in 106 



Carbolic acid 202, 216 



Carbonic acid, absorption of by 



plants • . . 333 



Cast iron, composition of ... . 201 

 " " conversion of into steel . 70 

 " " fracture of by water . . 175 

 Cataract, first, of the Nile, geology 



of 255 



Cell development 7 



Cement, gvpsum 40 



" iron 39 



Cements, h) draulic ... 38, 39, 40 



Cenlre-rail system 54 



Chemical actions, mechanical ener- 

 gy of ISO 



Chemical poisoning 216 



Chicago lake tunnel 26 



" river " 31 



Chilled iron 03 



shot 112, 115 



Chimogene 305 



Cliinese beauty's foot .323 



Chrome glass ' 216 



Chromida;, incubation of the eggs 



of 322 



Climatal changes 7 



Climate of Brazil 351 



" of New Zealand . . . . 353 



Climbing plants 328 



Clock, controlling 174 



Coal, formation of from petroleum . 259 

 " spontaneous combustion of . 191 



Ccesium , 215 



Cold, artificial, production of . . .215 



Color of man, cause of 297 



<' of t!ie sky 124 



" of sunlight 122 



Colors, complementary 124 



" in relation to light .... 122 



Compass, de\iation of 159 



Concretes for building . . . . 37, 38 

 Congelation, phenomena of . . . 299 

 Consanguineous marriages . . . 298 



Continuity, theory of 12 



Copper in the animal body . . . 307 

 " mines of Michigan . . .254 



Cork springs 72 



Correlation of the physical forces . 170 



Creosote 306 



Crystallogenic force 188 



Cycloscope 120 



Darien, Isthmus of, canal across . 358 



Darwin's theory 7, 9, 309 



Dead r^ea, analysis of water of . . 194 

 " " basin of 252 



367 



