364 
Vibration of a chord, xv., 135 
Viburnum, ix., 31 
Bridgetonense, iv., 31 
Vicia exigua, vil., 97 
Vigniera, viii., 77 
Vinegar plant, vi., 60-70 
Violacez, vii., 7 
Violane, ix., 145 
Virginia, geology of S. W. (title), 
vi., 113 
minerals from, iil., 77, 100 
southwest, mineral resources of, i., 
* | 159-163 
Virgin Is.,W. I., breccia, i., 21 
Virus, mitigated, v., 204-213 
‘¢ Visible Wind,’’ viii., 154 
Visceral Anatomy, xv., 98 
Myrmecaphaga jubata, xv., 98 
Tamandua bivittata, xv., 98 
Arctopithecus didactylus, xv., 98 
Dadypus seacinctus, xv., 98 
Tatusia novemeincta, xv. 98 
Manis longicaudata, xv., 98 
Vitis ineisa, vii., 9 
heptaphylla (new), ix., 10, 183 
rupestris, ix., 183 
quinquefolia, ix., 10 
Vivianite from New Jersey, ii., 13 
Vivier, Ernest du, elected resident 
member, Xi., 25 
Vivisection in the District of Colum- 
bia, resolutions on, xv., 272 
Vocal chords in voice production, 
action of, xv., 2 
photographs of, in action, xv., 2 
Volborthella tenuis, xiv., 132 
Voleanic action, vi., 28, 29 
air wave, vili., 83 
ash, i., 23, 49-56, 169, 171, 172 
ashes in Yellowstone Park, ili., 6 
ashes, microscopic examination of, 
iii., 14, 63-64 
dust of Krakatoa, diffusion of, iii., 
60-61, 54-65 
comparisons, xiv., 209 
phenomena, iv., 54 
Volcano on moon, y., 237 
Volcanoes, vi., 28, 29, 37 
origin and distribution, viii., 82 
Volts and ampéres, and what they 
mean, ix., 137 
Von Asboth’s method for estimating 
starch, x., 24 
Vorticellidx, ix., 34 
INDEX. 
Votes of thanks, xv., 133 
Votive adze, vi., 139 
‘*Vulcan’’ (planet), v., 247, 248 
Vulté H. T., elected Curator, xii., 
128 
Librarian, xi., 25 
Wad, ii., 18 
Wade, Herbert T., elected resident 
member, xiy., 220 
Wadi Werdén, ix., 23 
Wadis, ix., 120 
Wagon Wheel Gap., Col., i., 7 
Walcott, C. D., on Cambrian, Viii., 
176 
Wall at Chatata, Tenn., ancient in- 
scription on, xi., 26 
Ward, Delancey W., elected resident 
member, xii., 99 
Warm Arctic climate, ancient, iii., 
84-86 
springs, x., 64 
Wasatch Mts., Utah, copper ores, 1i1., 
19 
Wasatch range, glaciation in, ii., 
155 
Water, analysis of, vi., 42, 49, 53 
analysis, condenser for, xii., 54 
bath of copper, xiv., 79 
carbonic acid in, iii., 42 
of River Thames, England, ili., 42 
(chemical), v., 196 
contamination of, vii., 117-125 
of the Nile, ix., 120 
of the desert, ix., 121 
organic matter in, ii., 111-114 
spouts in Caribbean Sea, iii., 3 
supply of N. Y.. vili., 117-125 
supply, purification of, vi., 42-58 
sub-surface, vi., 77-91 
Waves, destructive action of, ii., 4 
Wavellite, iii., 18 
Weehawken tunnel, minerals, i., 
129-131; ii, 88-90 
Weight of atoms, v., 182, 183 
Weir, Robert, elected resident mem- 
ber, xi., 123 
West Farms, rocking stone at, xi., 13 
West India Islands, distribution of 
terrestrial molluses, i., 181 
geology, i., 21-24 
Westchester Co., N. Y., rocks of, 
viii., 50, 51 
West End Nat. Hist. Assoe., viii., 46 
