INDEX. 
Discovery in prehistoric mounds of 
Ohio, ili., 97 
of chloroform, xi., 149 
of elements, v., 181 
of the New World, influence of 
Science upon, xii., 242 
of North Pole, i., 40-48 
of stone implements at Trenton, 
vir ee a (ed 
of substances, lii., 192, 
199 
of tablets in Valley of Euphrates, 
ile Sa 
Discussions, ix., 4, 5, 21, 37, 38, 45, 
46, 69, 70, 83, 94, 95, 103, 136, 
199, 200 
Disease germs, vi., 57 
Disintegrated sandstone at New 
Durham, ii., 117-120 
Disporum trachycarpum, viii., 79 
Distilling apparatus, xii., 54 
Distinction between ontogenic and 
phylogenic variation, xv., 141 
changes by environment, xv., 
Distribution of time, mode of, i., 86 
-87 
Divination, vii., 42 
Division of Eutherian Mammals, 
xiii. 2 175, 234 
Dodge, R . E., elected member, xv., 
34 
193, 197, 
Doe River Gorge, East Tennessee, v. 
220 
Dogfish, Anatomy of the Ear of, xv., 
176 
Sacculus, 177 
Lagena, 178 
Utriculus, 178 
* Sinus Utriculus, 178 
Recessus Utriculus, 179 
Semicircular Canals, 179 
Ampulle, 180 
Nerve supply, 180 
explanation of figures, 181 
Dog-tooth spar, vi., 221 
Dolomite, v., 216 
in San Juan mts., v., 122, 125 
in Staten Island, v., 229 
pink, vi., 39, 91 
Vill., 21, 51, 53, 54 
Dolomyte, durability, ii., 128-130 
of New York Island, iii., 48-49 
vii., 21, 68, 215, 217, 218, 219, 
221, 224, 227 
142. 
315 
Domestic animals, terms used, etc., 
li., 120-122 
Dominion Government Survey Re- 
ports, xiv., 191 
Donald, James M., elected member, 
xv., 147 
Doricha evelynx, x., 52 
Dorchester sandstone, i1., 
136 
Ohio sandstone, 1i., 
of dolomyte, vii., 
of pyrite, vil., 38 
of stone, vii., 175 
of marble, iii., 100 
Double Stars, v., 259 
Douglass, James, elected member, 
xv., 147 
Draba platycarpa, vii., 7 
Dracocephalum, xiii., 98 
Draper, J. W., memorial of, i., 77, 
105, 108, 163 
Draper, Dr. H. W., memorial of, ii., 36 
Drift, glacial, vii., 18, 39, 50-54, 59 
glacial, vi. , 12, 18 
pre-glacial, vi., 16, 18 
Drift-hills of Western N. Y., i., 77-80 
Drilling of rocks by the ‘atolenite, 
iii, 105 
Driven wells, vi., 77-91 
patents for, vi. "91 
‘* Dry rot’? in timber, v., 110-120 
Dues and Fees, vii., 129-130 
Vill., 126 
Dufreynite, ii., 13 
Dumortierite, vii., 230; vili., 161 
Dunegan meteorite, vii., 6 
Dunes of Syria, vii., 167 
Durability of blue sandstone, ii., 
126, 136 
brown sandstone, 1i., 122-124, 136 
building stone, ii., 73-75 
gneiss, li., 135, 136 
granite, li., 134, 135, 136, 138 
limestone, ii-, 128, 136, 137 
marble, ii., 128, 133, 136 
Dust columns at Sombrero Island, 
Utes 
Dutch Gap, x., 36 
Duties on specimens, ii., 79 
Dwellings, cliff, x., 44 
Dyckman, Mr. Isaac M., elected resi- 
dent member, xiv., 68 
Dyer soe G.. ples resident mem- 
ber, xill.,; 23 
124, 125, 
125, 126, 136 
24, 34, 38 
