Ret ee Steam 3) ot 
| 
Sy SN De eR ie cele Se a 
INDEX. 
Wiecnrs Falls as a source of energy, 3 
Nichols, electrical resistance of ineandes 
u 363. 
cent plati ; 
conan. H. A., "St oe and Affini- 
s of Monticul ipora 
Son Lager mineral scol Hid- 
den, 2 
OBITU 
Delecno, 2 Achille, 166. 
8 
? 
Ohm, rage of elie 
Osbor .F,  Conolouhoda and Uinta- 
theri rium, 35. 
Oxidation, cpa eous of metals 
Oxygen, va tions in amount of ‘in fis 
air, Morle loi, wANT, 4 429. 
zone as a cause of the luminosity of 
phosphorus, 145. 
Packard, A. S., The Hessian Fly, 4 
pig ea terraces and ancient Soa 
Photographs of spectrum of comet, 134, 
Pla cau pf of, 82. 
Plants, see ANY and GEO 
Soengers sockets pore of Nich- 
ols, 363. 
Poggendorff, J. ©. “ — of the 
Exact Sciences, 24 
Pohiman, J., “asserts 8 
olarizati of heat ays ange, of 
plane of 
of = me aire 137, 
of plane a santi’s 
magnet vg 
Polar stations ‘jnternati iona 
Pritchett, H. S., ephemeris ot "aatelliies 
of Mars, 4 
ae y. x. Manual of Histology, 
R 
Radiophonic researches, Bell, 87. 
ening E., Zinn, noticed, 167. 
Rockwood, . G., notes on earthquakes, 
Japanese seismology, 4 
0. hy., obtainin a ak ae 
very high ° vacua, 
Satellites of Mars, ephemeris of, 485. 
Schaeberle, J. M., aurora of Sept. 12-13, 
1881, 341, 
499 
Scudder, 8. H., Butterflies, — _ 
Tertiary lake- basin of 
Seismology, Japanese, Rockwood, 468. 
Selenium, mictophonie action Ob: 31%: 
N.S f the 
Shaler, Earth’s 
Surface, n 
Shells, w one t. New England shell- 
hea: 
Shepard, C Bs, a new meteoric iron, 
Sherman 0. 
Davis iit t, 49. 
Silliman, B., hers of New Mexico, 
magnetic observations 
epee no 
Smith, 78 ig col me of pete 166. 
ith - I, BS te oo 414. 
Tu 
Smithsonian ast Report, er 
Soil an pants ilgard, 1 
Pace 
Solids, ott froth reactions of, 206. 
Solms-Laubach, Corallina, 325. 
Sound, Ags 
Sound-w: organ pipe 
— eravity: Pa i ry iene 
spectroscope efficiency of, 397. 
sae arsenic, 214. 
alse Jomet, 
Specteom-ines of metallic vapors, re- 
™ photometry ‘of, 2 
cer, J. W., preglacial outlet of _ 
358, 443. 
eConte, the stereoscope, 
Stevenson, z = fone group of South- 
n New 
Stockwell, z x Theory of the Moon’s 
eae. i, o kames of Maine, ssi 
Stresses caused by continents and moun. 
tains, 317. 
Sun, parallax of, Harkness, 375. 
— used as near Holden, 
Temperature variations of a zine bar, 
mn, Alve olites, oar and 
Tornadoes and waters aie ’ Ferr él, 33. 
Trowbridge, J., physical notices, 74, 14%, 
219, 316, 396, 484. 
