300 
of Oregon Indians, 63 
of Paleolithic age, 81, 82 
Arsenetted hydrogen, solidification 
Olsave, elo 
Arsenide of platinum, viii., 56 
of silver, vili., 56 
Art, aboriginal, viii., 116 
Artemesia Mexicana, vii., 11 
Artesian wells, vi., 77-91 
‘on New York Island, 
vii., 63, 64 
Xen es 
Arthropoda, v., 32 
Arthrodiran fishes, relations of, xiii., 
176 
Articulata, v., 32 
Artificial conversion of peat into coal, 
i., 75 
formation of the honeycomb, iii., 
107, 108 
gems, ix., 155 
origin of caves, ii., 3-6 
ponds and lakes, viil., 117-125 
Artiodactyl from Lower Miocene, xii., 
50 
Artionychia, xii., 96 
Artionyx, Xii., 95 
Artistic uses of trance state, 1i1., 107 
Arts, Winnebago, x., 39 
Aruba, flora and fauna, ii., 151 
terrestrial molluses, 151 
Asaphus platycephalus, xii., 237 
gigas, li., 3 
Asbestos, v., 185-229 ; vii., 213-224 
from Staten Island, 229 
Asclepiadee, vii., 11 
Asclepiodora decumbens, ix., 184 
Asclepias subverticillata, ix., 181, 184 
verticillata, ix., 181, 184 
Ascyrum Crux-Andrex, v., 217 
Ashtabula salt well, ix., 41 
Asphalt of Utah and Canada, ii., 50 
Vili., 26-28 
pavements, viii., 43, 44 
Aspicarpa hyssopifolia, vii., 8 
Aspidium, y., 136 
Aspidisea, ix., 34 
Asplenites Ottonis, vii., 115. 
Assets of the Academy, ix., 205 
Aster adscendens, viii., 78 
canescens, Vili., 80 
foliaceus, var. Buskei, viii., 79 
pauciflorus, vili., 79 
tanacetifolius, viii., 80 
ce 
INDEX. 
diffusus, 1x., 11 
lateriflorus (new), ix., 11 
miser, 1x., 11 
multiflorus, vii., 10 
Asteriation in garnet, v., 225, 226 
Asteroides, v., 250, 251 
intra-mercurial, 248 
Astor, John Jacob, elected resident 
member, xiv., 48 
Asterophyllites, ili., 46 
Astragalus, viil., 77 
Arisonicus, viii., 79 
Greenei, viii., 80 
Hosackiz, viii., 80 
Matthewsi, viii., 80 
Rusbyi, viii., 80 
Mexicanus, ix., 183 
Nuttallianus, vii., 9 
Astrocladia, three species, xiv., 113 
Astronomical drawings, Trubelow’s, 
ieeag ; 
instruments, v., 261 
literature, 261, 262 
necrology, 262, 263 
photographs, measuring apparatus. 
LOTSEXIVe 
photographs, the reduction of, 124 
progress for the year, vili., 13, 14 
Astronomers, v., 262, 263 
Astronomy of the earth, v., 234 
progress in, 234 
section of, x., 67 
section officers elected, xiv., 154 
photography applied to, i., 143-146 
and physics section, xv., 1, 34, 63, 
97, 124, 134, 147, 155 
Atacamite from Globe, Arizona, xiii., 
Athyris subtilita, v., 122 
Atlantic coastal plain strata, disloca- 
tions in, xiv., 8 
ocean (north) age of, v., 77-79 
Atlantis, its possible location, i., 24 
Atmosphere, carbonic acid in, ilii., 
40, 41, 91, 92 
circulation of, 61 
darkened by smoke, 60, 61 
of Pittsburg, acidity of, 65, 66 
of the sun, v., 241 
height of, xi., 40 
Atmospheric agencies, erosion by, 
v., 78 
phenomena, yellow clay, i., 1 
Atomic energy, v., 183 
