Index. 



393 



PAGE. 



Curasao, W. 1 133, 133 



Curves of efficiency in steam 

 engines 358, 354 



Datolite 13, 17 



Desilverization of lead ores, 



81—113 



Brodie's metliod, 99, 100, 103 



Faber du Faur's metliod, 



99, 108—108, 113 



Flack's method 95, 99 



Deweylite 18, 16 



Diopside 13, 18 



Dolomite 16 



Domejdiite 3, 17 



Dominica, W. 1 118, 134 



Drift, of IStateti Island 178—175 



of New Jerse}' 50 — 58 



Bifel limestone 149 



Enargite : 4, 17 



Enstatite 5, 11, 17 



Eocene rocks of the West In- 

 dies 189, 190, 191 



Eozoon 81 



Epidote ..11, 13, 17 



Erie shale 140 



Explosion-burette, for gas-analy- 

 sis 876—380 



Faber du Faur's furnace for de- 

 silverizing ores, 99, 108—108, 113 



Fibrolite 6, 11, IS 



Fire-clays of Staten Island, 171, 181 

 Flack process in desilverizing 



ores 95, 99 



E'lora of Btateu Island 173 



of tlie West Indies. . 130, 131 



Fluorite 18 



Franklinite 17 



Furnaces for desilverizing ores, 



88—118 

 Fusion-structures in meteorites, 



389—313 



Galenite 16 



Gardeau shale 357 



Gas-analysis, apparatus for, 



373—380 



Gas-springs, origin of 364, 365 



Genesee siiale 857, 363 



Genthite 6, 11, 17 



Geology of Hudson Co. , N. J. , 



.See Hudson County 37—73 



Geology of Staten Island, N. Y., 



See Staten Island 161—183 



PAGE. 



Gieseckite 7. 11, 17 



Goethite ; 4, 10, 17 



Graphite 8, 18, 18 



in meteorites 808, 804 



Guadeloupe, W. 1 118. 191, 193 



Guatemala, birds of 856 



Guiana, new bird from 883 



Gummite 4, 10, 16 



Gurliofite 16 



Gypsum 17 



Hamilton? fossils in Ohio, 



315—318, 344 

 Hamilton Group, 140, 141, 145, 



149, 160, 174 



Hamilton shales 857, 860, 367 



Hausmannite 17 



Hayti, geology of, 117, 131, 



189, 191 

 land-shells of . . . 133. 133, 134 

 Heat, mechanical equivalent of, 



20, 31 



Heat of meteorites 398, 399, 800 



Helderberg fossils of Ohio, 193—311 



Hematite 17 



Herschslite 6, 11, 16 



Hessite 8, 17 



Heulandite 6 11, 17 



Holosiderous meteorites 390 



Hornblende 13, 17 



HLibnerite 8, 13, 17 



Hudson Co. , N. J . , geology of, 37 — 73 

 Arclitean rocks of 39 — 83, 65 



borings in ,. . 59, 66 — 71 



copper-mines in . . 88, 34, 35 



drainage of 64, 65 



drift of 50—58 



erosion of 61, 63 



fossils in 49 



gneissic rocks of. .... .39, 30 



jasperoid rock of ' . . . 83 



minerals in 31, 45 



serpentine rocks of . . .80, 81 



shell-heaps in 61 



surface geology of . . . .53, 61 



trap of 85 — 50 



Triassic rocks of 83, 50 



Hudson River shale 363 



Humus, composition of . . . .301, 303 



Huron Group in Michigan 140 



Huron shale, 140, 357, 863, 366, 367 



Hyalite 5, 10, 18 



Hydraulic limestones of Ohio, 



fossils of 1V)8— 198 



Hj'drocarbons in meteorites, 



303, 803 



