INDEX. 
Gesner’s survey, xiv., 190 
Geysers of Iceland, viii., 184 
Theory of, xiii., 75 
of Yellowstone Park, iii., 7 
Giant’s Causeway, li., 3-5 
Gibier, Dr. Paul, elected resident 
member, xi., 123 
Gibsonville, N. C., supposed emerald, 
lil., 12-13 
Giddings, F. H., elected resident 
member, xv., 147 
elected permanent chairman of new 
section, xv., 154 
Gifts to the library, viii., 4, 29 
Gilia muliiflora, vili., 80 
rigidula, vii., 12 
Gingko, iii., 47 
Gizeh, borings in stone at, v., 120 
Glacier Bay, Alaska, Areal Geology 
notes,, xv. 24 
introduction, 24 
general geology, 24 
the Argillites, 25 
the Glacier Bay limestone, 26 
the quartz diorite, 27 
diorites, 28 
Crystalline schists, 28 
dykes, 28 
comparison with other Alaskan sec- 
tions, 29 
petrographical notes, 31 
the quartz diorite, 31 
the schists, 33 
the dikes, 34 
Glacier-ice, erosive power of, iii., 
51-52 
Glaciers, i., 167 
excavating power of, i., 29-30 
in western New York, i., 79 
over Catskill’s, i., 24-31 
Glacial boulders in the Great Hudson 
Valley, iii., 24-26 
epoch and subsequent warmth, iii., 
92-93 
epoch in North America, ili., 102 
erosion in North America, 1ii.,51-52 
gravels at Trenton, iii., 7-12 
phenomena at Ontonagon, iii., 14 
strie on Shawangunk Mt., iii., 
27-28 
Glacial drift between New York City 
and Rockaway, iv., 35 
and Preglacial drifts of New Jersey 
and Staten Island, iv., 26 
Glacial observations in Canada and 
Northern New York, iy., 43 
drift hills, v., 228 
drift on Staten Island, vi., 12, 17, 
18 
drift in India, vi., 41 
epoch, vi., 41 
striz, vi., 41 
Glaciation in Catskill Mountains, i., 
24-31 
on New York Island, i., 30 
on Staten Island, N. Y., i., 57 
in Western New York, i., 78-79; 
rity 
in North America, ii., 155-159 
of the Shawangunk Mt., iii., 
30 
Gland cells, mechanism of secretion 
in, xiv., 94 
Glass discs, vi., 98-103 
Glauconite, 1i., 10, 12, 85 
Gleichenia, v., 136 
Glen Cove, N. Y., leaf bearing sand- 
stones, iii., 30, 31 
Gletscher-milch, produced by ero- 
sion, ili., 52 
Glimpses of arctic scenery, ix., 156 
Globigerina cambrica, grandis, didy- 
ma, turrita, xiv., 111 
Glothlypis rostrata, x., 52 
Glucose, v., 194 
Glycerol, determination of xii., 55 
Glycine umbellata, ix., 10 
Glycosuvia, produced experimen- 
tally, xili., 176 
Glyptodon, ili., 53 
Graphalium, xii., 37 
Graphalium purpureum, v., 217 
Gnathodop, ii., 141 
Gnawed Beaver sticks, xiv., 6 
Gneiss, v., 222-263 
bordering Trias, v., 19, 20; i, 
70-72 
varieties of, vill., 54 
durability of, ii., 185, 136 
Gneisses, petrography of, xii., 203 
of S. E. Penna, viii., 50 mem- 
ber, xv., 134 
Godkin, E. L., elected resident 
Gold deposits in N. Y., i., 1 
at Mt. Wheeler, Nevada, i., 7; ii., 
50, 79-94, 95, 100-101 
crystals of, v., 277 
in pyrites, v., 192 
99 _ 
we 
