INDEX. 
Tyrosin, v., 197 
Twins and multiple embryos of Aim- 
phioxus, xii,, 17 
Ulmus, iv., 31 
Ulster Co., notes on geology of, xiii, 
165 
Umbellifere, ii., 47; vii., 10 
Umbelliferone, v., 197 
Ungnadia speciosa, ii., 92 
Uniformity of geological climate, iii., 
84-97 
Unio, ii., 142; v., 17; viii., 163 
United States, geodetic survey, iv., 1 
Phalangidae of, xi., 125 
Unrecognized families of larvee, xiy., 
61 
Ural Mountains, minerals, gem sand 
ethnology of, xi., 119 
Uralium, v., 200 
Uraninite, viiil., 185 
Uranium glass, experiments upon, 
xiv., 169 
Uric acid, v., 197 
Urodela, vii., 256 
Uronychia, ix., 34 
Urticacez, vii., 14 
Urtica chamedryoides, vii., 14 
Urticariz, v., 37 
U. S. eclipses, expedition to South 
Africa, x., 2 
Use of trance in surgery, ii., 66 
proposed for alchemical symbols, 
li., 54-56 
Utah, iron ores, ii., 15 
ozokerite, ii., 46 
luminous limestone, iii., 100 
sulphur-deposits, 1., 168-172 
Utica shales in Essex Co., N. Y., 
Xiil., 226 
Utricularia cleistogama (new), IDG Je 
subulata cleistogama, ix., 12 
Vaccinium Canadense, ix., 11 
corymbosum atrococcum, ix., 11 
disocarpum, ix., 11 
disomorphum (new), Exe lel! 
fuscatum, ix., 11 
Pennsylvanicum, ibe UL 
Vacuum discharges, xi., 72, 124 
pump, automatic mercury, xiv., 78 
Vaginicole, ix., 34 
Vanadinite, iii., 100 
Vanadium, v., 192 
Vancouver’s Island, v., 133 ; ix., 2 
Vanilline, v., 197; 
Van Ingen, Gilbert, elected resident 
member, xv., 124 
Van Nardroff, E. R., elected resident 
member, xv., 63 
Van Rensselaer canal survey, xi., 45 
Variable stars, v., 258 
Variation of decomposition in pyrites 
V., 201 
Varieties of new red sandstone, v., 12 
Vaseline, v., 194, 
Vaughan, Miss Virginia, elected resi- * 
dent member, xi., 25 
Vegetable cells on obelisk, v., 63, 68 
remedies of Indians, v., 202-203 
Vegetation, effects of, on the surface, 
x., 14 
in cities, ete., v., 264 
Veins in N. Y., gneiss, viil., 54 
metal bearing, in Colorado, v., 
122-130 
Velocity of light, v., 239 
Velutinas, v., 53 
Venation of leaf, relation to margi- 
nal forms, iii., 41 
Venericardia perantiqua, ii., 12. 
Ventilating chimneys, i., 67-70 
Ventro-appendicular muscular sheet, 
intermediate layer, xiv., 233 
deep layer of, xiv., 233 
superficial layer of, xiv., 233 
Venus alveata, ix., 88 
mercenaria, ii1., 141 
Venus, v., 248 
transit of, ii., 51, 52; v., 238 
satellite of, v., 249 
Verbena bipinnatifida, ix., 181 
canescens, Vii., 13 ; ix., 185 
ligustrina, ix., 181 
ciliata, vii., 13 
officinalis, vii., 13 
polystachya, vili., 80 
Verbenacex, vii., 13 
Verbesina, viii., 77 
encelioides, vil., 11 
Virginica, vii., 11 
Vermes, v., 32-55 
Vermont marbles, iii., 
Vertebrata, v., 32 
evolution of, ii., 64 
Vesbium, v., 200 
Vescaria Fendleri, vii., 7 
lasiocarpa, vil., 7 
;ix., 184 
100, 101 
