558 



INDEX. 



[Oaober, 



Coal supply, the limits of, 343 



— trade, present state of, 413 

 Coal-cutting machinery, 535 

 Coffee adulteration, 427 

 Colliery explosions, 131 



— winding engines, 414 

 Colorado gold mines, 13 



Colour blindness, apparatus for testing, 



276 

 Colours and their relations, 74 

 Condition of the moon's surface, 29 

 Constable, C, retaining walls, 417 

 Copper pyrites, extraction of silver 



and gold from, 134 

 Coral reefs and the glacial period, 



170 

 "Critiques and Addresses " (review), 



527 

 Crookes, W., a solution of the sewage 

 problem, 55 



— magneto-electric illumination, 307 



— on the probability of error in expe- 



rimental research, 1 

 Cryptograph of M. Pelegrin, 557 

 Crystallographic nets, 417 



DANKS, Mr., lining rotatory pud- 

 dling furnaces, 133 

 Danvers. F. C, peat, 466 

 Darwin, C, " The Expression of the 

 Emotions in Man and Animals " 

 (review), 113 

 Davis, H., Callidina, new species, 



422 

 Dawson, Commander, powder pres- 

 sures of the first 35-ton gun, 267 



— J. \V., introduction of genera and 



species in geological time, 363 

 Defty, H., trunk refinery and pud- 

 dling furnace, 264 

 " Depths of the Sea " (review), 523 

 De Morgan, A., " A Budget of Para- 

 doxes " (review), 121 

 Devonian question, present state of 



the, 104 

 Dewalquite, 266, 539 

 Diamond, combustibility of, 424 



— some new facts concerning, 437 

 Diamonds imbedded in xanthophyl- 



lite, 265 



— in California, 416 



' Dictionary of Terms used in Archi- 

 tecture, Building, Engineering, 

 Mining, Metallurgy, Archaeology, 

 the Fine Arts, &c." (review), 522 

 Didymium in Cumberland, 136 

 Diffusion apparatus, Horsky's, 553 

 Dixon, W., researches at the Great 



Pyramid, 273 

 Dolmen mounds and amophorlithic 

 monuments of Brittany, 236 



Douglas, J., gold mines and milling 

 of Gilpin County, Colorado, 

 United States, 13 



Dover harbour, 541 



Drayson, Mr., " On the Cause, Date, 

 and Duration of the last Glacial ' 

 Epoch of Geology, and the Pro- 

 bable Antiquity of Man ; with 

 an Investigation and Description 

 of anew Movement of the Earth" 

 (review), 256 



Drills, rock, 542 



Dufeu, M., the pyramids of Egypt, 



5" 

 Dyes, stability of various, 142 

 Dynamite, 267 

 Dynamometers, 418 



" T^ARTH, an Investigation and 

 J-> Description of a New Move- 

 ment of" (review), 256 



Eledric currents of the earth, 142 



— light, 550 



Electrical method of sawing timber, 

 141 



" Elementary Geology " (review), 129 



" Elementary Treatise on Natural 

 Philosophy" (review), 394 



" Elements of Natural Philosophy " 

 (review), 409 



"Elements of Zoology" (review) 128 



Emerald, colouring matter of, 537 



Enargite, mineral, 538 



" Encke's Comet, Reports of Obser- 

 vations on " (review), 125 



English language, future of, 367 



English, T. J., injecting apparatus 

 for animal tissues, 277 



Enstatite, 266 



Erosion of lake-basins, 425 



Error, probability of in experimental 

 research, 1 



" Eruption of Vesuvius in 1872 " (re- 

 view), 247 



Evolution theory, 363 



Exhibition, International, 1873, scien- 

 tific aspect of, 386 



Explosions, colliery, 131 



" Expression of the Emotions in Man 

 and Animals" (review) 113 



FETTLING with oxide of iron, 

 264 

 Fire-proof paint for wood, 143 

 "Forces of Nature" (review) 126 

 Furfurol, formation of from wood, 

 143 



GALLOWAY, R., safety-lamps, 

 262 

 Gas-burner, Wallace's, 421 



