512 
mammals, xii., 27 
of Staten Island, vi., 16 
crust of earth, vi., 28-33 
flexibility of, vi., 32, 33 
thickness of, vi., 28-30, 37 
period, temperate climate, ii., 94, 
95 
teliosts, activity of, ili., 54 
strata, 1., 15-24 
in Chihuahua and Texas, ii., 90, 
94, 95 
marl-belt of New Jersey, ii., 9, 13, 
85, 138, 139 
Crichtonite (?), vii., 219 
Crinoidea, ix., 139 
Cripple Creek gold mines, xv., 127 
Crocidolite, vili., 17; x., 4 
of South Africa, 1ii., 104 
Croton capitatus, vil., 13; ix., 182 
argyranthemus, 1x., 181 
glandulosis septentrionalis, ix., 181 
gracilis, ix., 182 
Neomexicanus, 1x., 185 
Croton water supply, viii., 517-112 
Crow, A. Eugene, eiected resident 
member, xii., 137 
Crowsfeet or Caltrops, iv., 40 
Crucifere, vii., 7 
Crustacea, v., 41-42 
vili., 152 
Crumplings of clays, xiv., 20 
Crustacea, palzeozoie, vili., 152 
Crusiana, iv., 78 
Cryptidine, ii., 63 
Crystalline rocks bordering Trias of 
New Jersey and Pennsylvania, 
Ve, 19)520 
Crystals of calcite, iii., 19, 20 
diamond, iii., 21-72, 105-107 
quartz resembling diamonds, iii.,72 
ruby, iii., 21 
of metallic tin, xi., 96 
spheres, v., 233-267 
of Zircon, vii., 6 
ice, x., 120 
Ctenodus, ii., 145-146 
Cuba, W. I., cultivation of sugar- 
cane, lil., 15, 16 
of sorghum, i1i., 5, 6 
of sugar-beet, iii., 5, 6 
of sugar-cane in Cuba, iii., 15, 16 
Cuculliea, ii., i1 
Cucurbitacez, iii., 45; vii., 9 
Cucurbita foetidissima, ix., 184 
INDEX. 
Cumarine, v., 197 
Cupric hydrate, v., 215 
Cuprified wood of Texas, i., 17-21 
Cuprite, viii., 13;x., 143 
Curacaco flora and funna, ii., 151 
terrestrial molluscs, ii., 151, 152 
meteorological notes in, iv., 47 
Curmatinz, revision of, viii., 177 
Curtis, H. 8., elected resident mem- 
Jerry o-ahoige Itzal 
Curtis, John G., elected resident 
member, xii., 25 
elected sectional chairman, 66 
man, 66 
Curves of efficiency, i., 113, 114 
Cuscuta indecora, vil., 12 
arvensis, 1X., 185 
Cushing, Prof. H. P., elected cor- 
responding member, 63 
Cutter, Rev. Manasseh, paper on sea 
anemones, vii., 244 
Cutting of rock crystal, ete., v., 266, 
267 
of the diamond, ix., 146 
Cyanite, viii., 22-162 
Cycads in cretaceous, v., 134-136 
Cycas, iv., 47 
Cyclones in the West, iii., 3-5 
Cyclops, ix., 33 
Cyclostomata, vii., 259 
Cyclura bocolopha, x., 52 
Cygni, notes on, x., 61 ; xiii., 170 
Cylindrella, ii., 152-153 
Raveni, ii., 152 
Cymbella, xii., 220; xiii., 101 
Cyperacez, vii., 14 
Cyperus Mristatus, vii., 14 
Berkleyi (new) ix., 13 
cyrtolepis, ix., 182 
levigatus, (new) ix., 14 
wniflorus, ix., 182 
Cypris, ix., 33 
Cyprina Morrisii, 1i., 12 
Cypsilidee, iv., 34 
Cyrtoceras, viii., 115 
Cyrtolite, viii., 185 
Cystids, vii., 2 
Dactylethra, vii., 257 
Deedalea confragrosa, v., 111 
voraz, v., 111 
Dakota, minerals from, iii., 17 
Sandstones, v., 133-134 
tin mines of, viii., 146, 148, 150 
