362 
Transit of Venus, ii., 51-52;v., 238 
Transmutation of metals, ix., 72 
Trapa micropnylla, ix., 30 
Tey is Ale 724 
Columnar, Orange, N. J., iv., 4 
dikes in the Adirondacks, xv., 248 
in the Lake Champlain valley, xi., 
13 
of Champlain, xv., 20 
in East Tennessee, v., 220—222 
in Staten Island, v., 230 
of Palisades, 1i., 117-120 
pavements, Vili., 42 
Trays for cabinets, moulded, xiii., 
140 
Treasurer, report of, iii., 69; viii., 
125, 126; ix., 106, 107; xiv., 88; 
xv., 130 
receipts, xv., 130 
disbursements, xv., 131 
Tree culture, viii., 36, 37, 40 
Trees in cities, v., 264 
planting and destruction of, iii. 
35-37 
Trematobolus insignis, Xiv., 122 
Tremolite, ii., 149; iii., 49 
Tremolite, i., 58 
Trenton limestones in Champlain 
valley, xili., 115, 225 
Trenton, N. J., stone implements at, 
iii., 1, 7-12 
rocks, vili., 48 
Trial of building-stone, methods, ii., 
75, 76 
Triarthrus Beckii, antennz of, xii., 
237 
with appendages, vili., 109 
Trias of America, v., 17, 18, 19 
of South Africa, v., 20 
reptilian foot-prints in, v., 72 
Triassic coals, metamorphism by dia- 
base dikes at Egypt, N. C., xv., 
105 
copper ores, ili., 18, 19 
fossilsat Weehawken, N. J., v., 17 
four-toed tracks, xii., 188 
of New Jersey and Connecticut, 
vi., 124-128 
of Staten Island, vi., 16 
of Penn., viii., 47, 56 
sandstone, ii., 117-120 
strata, i., 20 
Tribally organized societies, 
study of, F. H, Giddings, xv., 155 
INDEX. 
Tribes of British Columbia, viii., 3, 
Tribolos, iv., 40 
Tribulus maximus, 1x., 181, 183 
Triceratops, ix., 31 
Trichloris pluriflora, vii., 14; ix., 182 
Trifolium, iii., 39; viii., 79 
Trilobita of Protolenus Fauna, xiv., 
138 
Trilobite, i., 7; 1i:, 38, LO7- mya lle: 
Trilobitic fauna of Cumberland head, 
Xv., 21 
Trinucleus concentricus, vii., 4 
Trinidad, pitch lake of, viii., 26 
Trinomalism, x., 81 
Triodia acuminata, iv., 182 
albescens, iv., 182 
eragostoides, iv., 182 
Toiphylite, ii., 25, 42 
Triplite, ii., 25 
Tripoli interstratified with volcanic 
ashes, i., 55 
Trips through marble quarries of 
western, northeastern and east- 
ern New York, xy., 188 
Trochilia, ix., 34 
Trochosmilia conoides, i1., 12 
Troglodytidx, vi., 139 
Troilite in meteorite, vi., 76, 92, 144, 
145 
Tropical calms, viii., 168, 169 
Tropical birds, habits of, xiv., 66 
Trowbridge, Wm. P., death of, xii., 2 
Troximon glaucum, viii., 80 
Tubes of earth by cicada, v., 121 
Tubercular disease, prevention of, i., 
181 
Tuckerman, Alfred J., elected resi- 
dent member, xii., 25 
Tudora, ii., 151-153 
megacheila, 151 
versicolor, 152 
Tuning Forks, method of comparing 
pitch of, xiv., 76 
Tunnel between England and France, 
i., 155-158 
Turba of Brazil, i., 76 
Turquoise, ix., 148; viii., 3, 7, 162 
Indian ornaments of, 162 
Tuscarora Indians, ii., 58-60 
Tyrannidx, vi., 139; ix., 34 
Tyringham, Mass., spherostilbite 
and chabazite, ili., 18 
