I873-] 



INDEX. 



559 



Gas reservoir, a natural, 281 



Gases, variation of temperature which 

 occur in diffusion, 424 



Geikie, A., " Science Primers: Physi- 

 cal Geography" (review) 411 



Genera and species, introduction in 

 geological time, 363 



" General Glaciation of Jar-Connaught 

 and its Neighbourhood in the 

 Counties of Galway and Mayo" 

 (review), 260 



Geological awards, 270 



— diagrams, 426 



" Geological Stories ; a Series of 

 Autobiographies in Chronological 

 Order" (review), 258 



Geological time, introduction of 

 genera and species in, 363 



" Geology of the London Basin " (re- 

 view), 251 



44 Geology, the School Manual of" 

 (review), 258 



" Geometric Turning" (review), 406 



German silver, 428 



Germs, atmospheric life, 224 



" Girders and Similar Structures, 

 Theory of Strains in " (review), 254 



" Glacial Epoch of Geology, Last 

 Cause, Date, and Duration of" 

 (review), 256 



Glacial period and coral reefs, 170 



— geology, 545 

 Glaciation of Ireland, 425 



" Glimpses of the Future Life " (re- 

 view), 407 



Gold and silver, extraction of from 

 copper pyrites, 134 



separation of from lead, 134 



— brittle, from Australia, 143 



— from quartz, 534 



— mines and milling of Gilpin 



county, Colorado, U.S., 13 



— mining, 534 



Gramme, M., magneto-electric engine, 

 280 



Greener, T. and W. Ellis, fettling 

 with oxide of iron, 264 



Grover, J. W., railways and their 

 future development, 153 



Guadalcazarite, a new mineral, 135 



Guillemin, A., "The Forces of Na- 

 ture " (review), 126 



Gum Arabic, preservation of from 

 mouldiness, 552 



Guns, 267 



— and armour, 136, 539 

 Gun-cotton, preparation of, 564 



HEMATITE, brown, occurring in 

 the lower silurian rocks in 

 Longford and Cavan, 263 



Hair, preparation of, 281 



Hall, A., and W. Harkness, " Re- 

 ports on Observations on Encke's 

 Comet" (review), 125 



Harbours, 539 



Haughton, S., " Principles of Ani- 

 mal Mechanics " (review), 404 



Hay, spontaneous combustion of, 552 



Heat from the moon, 279 



— new form of experiments on pro- 



duction of, 141 

 Hebronite, 538 

 Helmholtz, H., " Popular Lectures 



on Scientific Subjects" (review), 



395 



Herschelite, mineral, 135 



Horner, C, spectra of some cobalt 

 compounds in blowpipe chemistry, 

 419 



Hot air, apparatus for heating with, 

 552 



Hughes, W., " Physical Geography" 

 (review), 411 



Hull, E., "A Treatise on Building 

 and Ornamental Stones of Great 

 Britain and Foreign Countries " 

 (review), 127 



the coal famine, 145 



Huxley, T. H., " Critiques and Ad- 

 dresses " (review), 527 



Hydrargyrite, mineral, 135 



"Hygiene of Air and Water" (re- 

 view), 118 



Hygrophyllite, mineral, 538 



INDIUM in zinc-blende, 539 

 Injecting apparatus for animal 

 tissues, 277 

 International communication, 541 



— exhibition, 1873, scientific aspect 



of, 386 



" Introduction to Physical Measure- 

 ments" (review), 520 



" Iron," a weekly journal, 264 



Iron and Steel Institute, 414, 535 



manufacture, 414 



— lake, patent for producing, 133 



— economical preparation of for 



Danks's puddling furnace, 536 



— gilding, 428 



— ore fossiliferous, description of the 



remarkable deposits of in Southern 

 Pennsylvania, 263 



— ores of Nova Scotia, 263 



— purifying with salt cake, 134 

 Isopyre, 265 



J 



EFFERSONITE, 266 

 Jones, F., " The Owen's Col- 

 lege Junior Course of Practical 

 Chemistry " (review), 259 



