492 
Silliman, B., Joseph Henry, 4 
Silver chloride and bromide, len 189. 
ith ecomposition of chromic 
: be ee Filicum, 223. 
Smith, J. fos cay from Alabama, 203. 
Smithsonian Inst., secretary of, 486. 
Solar, s oo Soe: 
Solids, Pati Pee of, 472. 
es f the electric spar 
148. 
tahl, E., pitti of hens, 155. 
Bhar, , Schmidt's Nova Cygni, 7 
on, J. J., surface Soler of Penn- 
pivakin, 245. 
U Pper Devonian rocks of Pett as 
geological survey of P 
artes 2 H, ferment. Shao of tie 
Strasborgher, E., Acetabularia Mediter- 
ranea, 
Stur, ee ee Carboniferous plants of 
Moravia, 398. 
ona, : new oxide of, 2 
Sun, age of, Croll, 226; Kirkwood 291. 
oe oO 
ye Beas sudden Sek of, 
Trouvelot, 
3 
Telephone, an npetaaes test, 312. 
woh ype 
Trouvelot. L, undolaton in the. tail of 
Sopa s comet, 8 
don extinction of a solar protu- 
’s zodiacal light, 88. 
oe f: papaieal notices, 54, 147, 
215, 308, 394. e 
ermak, G., die Glimmergruppe, 1 
a, J. flasks opened on the rei 
the moon 
Universities in Germany, 237. 
Up av modified drift in 
N. Hamp- 
Uranus, ialliins of, Rodgers, 195. 
. 
INDEX. 
WwW 
Wadsworth, M. E gain gs of and Pe- 
trography of Bos 
echter, atomic weights of the elements, 
305. 
Wallace, S. J., ““Geodes” of the Keokuk 
formation, 366. 
fossil wood from the Keoknk. 396. 
Watson, S., poplars of N. America, 136. 
Tndex to N. America n botany 400. 
Weather service, volunteer, 2 
cond re ss elec pce. a calor- 
asurements, 215, 
Weisbach’s Mechani cs, 78. 
Wheeler, G. M., gecl. report ¢ of, 55. 
s, 5 
5. 
Carboniferous and Upper Silurian 
fossils of gate and Indiana, 398. 
bleraes = P., paleontology (40th par- 
Wibbe a sent Tange for two orchids, 153. 
Wi solids, 472. 
Wisner, J., influence of light and heat on 
comer eae = ae nts, 73. 
Wilson, E. B. 
id 
v. B., Mesocarpex, 4 
Wood tar, triacid eva of, 3 
Ba oes C. R. A., chemi ax Fach 308. 
Wright, E. P., botanical publications of, 
156. 
Wiiliner, spectrum of the electric spark, 
148, 
x 
Xanthin-like bodies in digestion, 476. 
Zéller, ammonium nitrite in combustion, 
210. 
ion of, 320. 
Pyenogonida, new, now, Wilson, 200. 
See further under GEOLOG 
Zulkowsky, constitu cross of aoaliin an 
