viii TABLE OF CONTENTS. 



Chlorine, Activity in the Dark, 145 ; Hydrogen, reducing Power of Nascent, 

 180; Ozone in India lluhber, 182; Nitrogen: Solidification of Nitrous Oxide 

 (ias, 183; Carbon: Lii^uid Carbonic Acid, 182; Diffusion of Carbonic Acid, 

 U!G. 



Organic Compounds, (ilycerine: Electricity of, 133 ; Alcohol: Alcohols 

 from Flint and Quartz, liS."); Alcoholic Fermentation, 184; Hydrocarbons : 

 Fichtelitc, 180 ; Thallene, 181 ; Yiridin, 181. 



Miscellaneous: Atomic Theory, 1G9; Liquefaction of Gases, 187 ; Elec- 

 tricity of Crystals, 133; Chemical Force of the Sun's Kays, 186; Solvent 

 Power of Liquid Carbon Dioxide, 189; Action of Silicate of Soda on Fer- 

 ments, 184; (icrm Theory of Fermentation, 184; Separation of Digestive 

 Ferments, 187. 



E. MINERALOGY AND GEOLOGY (xliv) 191 



(a.) MINERALOGY. 



Iron in Australia, 211 ; Tin in Australia, 191. The Tourmaline, 201. The 

 Diamond not in Xantho')hyllite, 200. Meteorites: Crust of, 194; Black 

 Incrustation of, 197; Meteoric Dust in Snow, 209. New Species: Maxite, 

 a New Ore of Lead, 194; Seebachite, 192; Tammite, 192; Manganophvll, 

 193; Kryokonite, 193; Zeunerite, 193; Syngenite, 193. See also, under 

 Summary, Miseualogy. 



(b.) GEOLOGY. 



General : Antiquity of the Guadaloupe Bone Breccia, 197 ; Flora of the 

 Pliocene in France, 198; Sub-Wealden of England, 211; Nature of Loess, 

 201; Fossil Plants of the Northern Hemisphere, 210; Enlargement of 

 Coast by Marine Yegetation, 214; Primordial Fossils in the Rocky Mount- 

 ains, 199; Age of Wyoming Coal, 199; Upper Coal Measures AYest of the 

 Alleghanies, 200; Industrial Employment of Natural Gases, 208; Earth- 

 quake in Italy, 92; Yolcanic Eruption in Iceland, 201. 



Glaciers and the Ice Period : Remnant of the Ice Period in Scotland, 

 197 ; Kryokonite, 193 ; Glaciers in the IMerced Mountains of California, 197. 



Economic Geology: Iron in Australia. 211 ; Tin in Australia, 191 ; Lo- 

 cality of the Material of Chinese Porcelain, 191 ; Nitre in South America, 

 191; Pitchblende in Colorado, 192; Dolomites of the United States, 192; 

 Russian Mineral Phosphates, 211; Coal and Bitumen: Coal in Peru, 199; 

 Wyoming Coal, 199 ; West Alleghany Coal Measures, 200 ; California Pe- 

 troleum, 207, , 



Geological Reports ani Explorations: Survey of Canada in 1871-2, 

 202 ; of Indiana in 1871-2, 202 ; of New Jersey in 1872, 203 ; of Oliio, 204, 

 205; Mining Statistics for 1872, 203. See also Gkoguaphv. 



F. GEOGRAPHY (liv) 213 



(a.) GEODESY, NAVIGATION, AND HYDROGRAPHY. 



Measurement of an Arc of a Meridian : in the Centre of Europe, 23 ; in 

 Spain and Algiers, 233 ; Telegraphic Longitudes, 18 ; Barometric Determi- 

 nation of Altitudes in the Rocky INIoimtains, 91; Ascertaining a Ship's 

 Place at Sea. 231 ; Sounding-lines of the Challenger, 235. 



(b.) PHYSICAL GEOGRAPHY. 



Enlargement of Coast-land by Marine Yegetation, 214 ; Rain-fall : IJelation 



