INDEX. : 
Gryphea Pitcheri, ii., 85 
vesicularis, i1., 10-13, 85 
Guano, ix., 85 
Guatemala, obsidian implements, i., 
105 
Guilleminia illecebroides, ix., 181 
Gulf Stream, vili., 117 
Gulo, xii., 51 
Gunnison Col. iron ores, i., 7 
Gurhofite, v., 229 
Guthrie, Ossian, elected correspond- 
ing member, xii. , 93 
Gutierrezia Enthamix, vii., 10 
Sarothre, vii., 10 
Gutierrezia, vili., 77 
Guyacum Coulteri, 1i., 92 
Guyot, Arnold, life of, iii., 66-68 
Gymnosperma corymbossum, vii., 10 
Gymnosperms, in cretaceous, v., 135-— 
136 
Gypsum in caves, ii., 38-40 ; iii., 19 
and salt, Saltville, iv., 1 
in Northern Texas, i., 17 
Utah and Nevada, i., 172-173 
Gyracanthus tuberculatus, iii., 104 
Gyrating bodies, vi., 131-134 
Gyroscope, vi., 131, 133 
gyrostal and other rotating bodies, 
studies of, iv., 36 
Habranthus, 11., 92 
Habranthus Andersonti, vii., 14 
Thurberi, viii., 78 
Heckel, Ernst, selected honorary 
member, xili., 155 
Hair hygrometer, use of, xv., 157 
Hairless mouse of California, xiv., 45 
Halectites, in Luray Cave, v., 217 
Haliotis, vili., 162 
Hallock, Wm., elected resident mem- 
ber, xii., 93 
Hanksite, viii., 9 
from San Bernardino county, Cal., 
ayn ty 
Haplopappus spinulosus, vii., 10 
Hardness of Brazilian diamond, v., 
223-224 | 
Harringtonite, v., 77 
Harlem, minerals of, v., 74-77 
Hartford, Conn., gasteropods in 
streets of, i1i., 20 
Hartley, Marcellus, elected resident 
member, xv., 147 
Harpides, vii., 2, 3 
25 
(sis) 
Harvard College Observatory, photo- 
graphs and Reclus planetary 
photographs, J. K. Rees, xv., 
147 
Havemeyer, Wm. F., elected resi- 
dent member, xy., 147 
Hawaiian Islands, x., 3 
Head of a South American Indian, 
xi., 26 
of sandstone from Staten Island, 
li1., 81 
Health-foods, ii., 95 
Heart of Africa, (title) vi., 165 
Heat of earth, vi., 20-22, 29, 32, 33 
of sun, action on stone, ii., 123 
of sun,v., 240-241 
from moon, v., 238 
from chemical energy, v., 189 
into electricity, v., 90-97 
Heating surface required in steam- 
pipes, i., 67-70 
Heavenly bodies, origin of, xiii., 170 
Hedeoma Drummondii, vii., 13 
Hedeoma procumbens, viii., 80 
Hedera, v., 136 
Hedysarum, xii., 58 
Helenium amphibolum, vii., 11; 1x., 
182 
elegans, ix., 184 
Hoopesi, viii., 79 
microcephalum, ix., 181 
nudiflorum, ix., 182 
setigerum, Vii., 11 
tenuifolium, ix., 184 
Helianthus, 1., 8 
Helianthus annus, vii., 11 
ciliaris, vii., 11 
Maximiliani, viii., 81 
Heliochrysum, v., 137 
Helicoceras, ii., 94 
Heliostat, xv., 135 
with small mirrors, xv., 155 
Heliozoa, ix., 33 
Helix alternata, v., 218 
pentodon, ii., 153 
pomatia, xili., 136 
Hematite, ii., 7-8, 14-17; v., 217 
of Gunnison, Col., i., 7 
in Southwest Virginia, i., 162 
Hemiptera, v., 45 
Herderite, iii., 37 
new locality, v., 80; vili., 12 
Hering, Daniel W., elected resident 
member, xv., 147 
