INDEX. 359 
Sugar beet cultivation, iii., 5, 6 
Cane crop, soil exhaustion by, iii., 
15, 16 
from sorghum, iii., 5, 6 
Sugar, maple, sap-sand, i., 167 
Suggestions as to the determination 
of the relative mass of the two 
components of the double star 
Eta Cassiopeiz from Ruther- 
35 
method to be pursued and formule 
to be used, xv., 35 
Sium cicutefolium, iii., 42 
Sullivan County, N. Y., moraine de- 
posits, lii., 25, 26 
Sulphides of silver, etc., v., 128 
Sulphohalite, viii., 8, 9, 22 
Sulphur, v., 195 
dioxide of, v., 185 
springs in the desert of Sinai, ix., 
121 
deposits in Utah and Nevada, i., 
168-175 
Sulphuretted hydrogen, v., 187 
Sulphuric acid, v., 186, 187, 192 
Summer experiences of Prof. Mayer, 
> fara 
Summit meteorite, cuts of, ix., 196 
meteorite, analysis of, ix., 197 
Sun, v., 238-247 
and meteorology, v., 239 
atmosphere of, v., 240 
corona of, v., 245-247 
chromosphere, v., 245 
distance of, v., 238, 239 
eclipse of, v., 245, 246 
heat of, v., 240, 241 
parallax of, v., 238, 239 
prominences of, v., 244, 245 
spectra of, v., 242-244 
surface of, v., 239-242 
Sunapee Saibling, xii., 139 
Sun-photographs, i., 145 
Sun-spots, ii., 35 ; 239-242 
spectra of, v., 242 
penumbras of, xiv., 77 
pictures of, xiv., 78 
Sun, total eclipse of, ix., 5, 47, 52 
Surface deposits, x., 8 
of fossil resins, viii., 157, 158 
of sun, v., 239-242 
Surgery, use of trance in, ii., 66 
Surivella, xiii., 101 
furd photographic measures, i., 
Survey at Lake Meeris, iii., 78, 79 
Geodetics, United States, iv., 1 
of United States, Trigonometric 
and Topographic, iv., 58 
Survey, Van Renssaeler canal, xi., 45 
Sussex County, N. J., ores and min- 
erals, ii., 25 
Swash, x., 6 
Sweet Grass Hills, x., 57 
Syenite, elaeolite, xi., 60 
Sylviide, vi., 139 
Symbols, alchemical, ii., 102-104 
chemical notation, ii., 53-59 
Synclinal fold in Page Valley, v., 
216 : 
Synthesis, chemical, v., 197 
Synthyris Plantaginea, viii., 80 
Systems of mechanical units, xv., 34 
Introduction by Fourier, xv., 34 
System of recording field notes, xv., 
191 
Tabasheer, viii., 158, 159 
Table of chemical characters, ii., 56 
Table-land of New Mexico, viii., 77 
Tachypetes aquila, vii., 83 
‘* Taconic system,’’ vi., 138 
Tadpoles, cloacal aperature of, xii., 
242 
Tails of comets, v., 251-255 
Talesven ooo Ville a oo 
deposits near Gouverneur, N. Y. 
(origin of), xv., 154 
schist, i., 56-58 
serpentine and tremolitic min- 
erals, association of, iv., 77 
white, from Gouverneur, N. Y., 
TN for TA 
Talinum aurantiacum, vii., 8 
lineare, vii., 8 
patens, ix., 181. 
Tamborrel, J. de M., elected corre- 
sponding member, xii., 25 
Tamarisk, vii., 170 
Taraxacum, viil., 79 
Tasmania, tin of, viii., 148 
Tatlock, John, Jr., elected Curator, 
Xai, WAS) 
Tattooing among Indians, viii., 115, 
116 
Taxodium, iii., 85 
distichum, ix., 31 
Tehuantepec ship-railway, viii., 164— 
174 
