INDEX. 
Niemoller, new current interrupter, 407. 
Nilson, stterbin and scandium 
Norton, W. A., variability of the ultimate 
mole 
ce of effective molecular action, 
eau o F., Conspectus Flore Euro- 
pees, LTT. 
OBITUA 
Biaeions re a 263. 
Zanardini, G., 
Observatory on nn Etna, Langley, 259. 
eased dome for; Greene 
pu cblisations of, 495, 4 
onier, Haissdaction of hydr ogen silicide, 
oi-wen records in Pennsylvania, 69 
born, H. F., lower jaw of Loxolopho- | 
don, 304 
Otology, American Journal of, 2 
Oxygen and the 7 elements, "a 
in the sun, 1 
ne fi in rie spectrum, Dra- 
per, 448. 
tg 
i Springs, Colorado, 497. 
Peet, S. D., American Antiquarian, 341. 
Pen, enfield, Ss. L., chemical composition of 
Piscabmas 226. 
observ: on the 
lanet discovered Mar. er 1879, 393. 
Philipp: 
Phitalen of ‘orthoeres, 405. 
Plan ercurial, 4 
Peace st proabacce de on, Peters, 393. 
Plants, see BOTANY. 
Beas , influence on chemical action, 
511 
Prime, F. brown —- deposits 
of thigh county, Penn., 3 
Pulsifer, W. H., thickness ss Young’s 
reversing layer, 303. 
Pumpelly, BR. secular rock-disintegration, 
133. 
King’s Systematic Geology of the 
40th Parallel, 296. 
sar eennemanine salts, formation of, 
Radiometer, 
Rammelsberg, o F., lepidolite, 333. 
R 
geology of 
a H. W., North American Fungi, 
ersiug layer, Sag % Pulsifer, 303. 
atl C. MG recent American earth- 
peace 158 
earthqu: ake of Nov. 18, 1878, 260. 
Rihimann, dimensions ay molec ecules, 407. 
Russe Cy New Jersey and 
the Connecticut valley, 328. 
Rutley, F., the Study of Rocks, 333. 
8 
Cc. S., the forests of Central 
Sargent, 
Nevada, 417. 
Saturn, third te of, Holden, 49. 
satellites of, prea 431. 
awitsch, A., Pra Astronomy, 74. 
Sawyer, &. F., failure of meteors from 
Biela’s comet i in 1878, 74. 
of meteors, 
Seandium, 4 478. 
A., magnetic storm of May 4, 
1878, ona. 
Schm an Green Algz of Mediterra- 
: ihcoiaih ak weeds 
Science News, 83. 
Scudder, S. H, early types of insects, 72, 
Seubert, atomic weig of iridium, 64, 
Silica, gelatin ous, 246 
Smith, A., new series ae pataessecor 477. 
Smith, EB. F., electrolytic estimation 
cadmium , 60. 
_ J. Ez new element, mosandrum, 
Sonal. velocity in cgi Thilseng, 125. 
Sounds, velocity of loud, Jacques, 116. 
Southworth, R. J., eter ta of hydrated 
salts, 399. , 
