INDEX. 
Molecule, free path of, Hodges, 2 
Mo e 8 motion, inequalities of, Stockwell, 
Nakamura, sulphur in oid 229. 
ola po os ly, 
Hoden's ‘Astronomical 
"Bibliography, 2 
Uranoietia Argentina, of 6. 
Nichole Ei. optical method f 
Saco of high temperatures, 42. 
Nichols, H. A. A., volcanic action in 
Dominica, 426. 
Nicholson, H. A., Paleontology, 7 
Monograph of the Silurian Foasile 
i e, 237, 
et 
er of 1879, 234. 
Ni ordsnk aie. Arctic Ses ste of, 165. 
OBITUARY— 
Sadebeck, A., 168. 
ees mper, W. P., 427. 
E., 
Paisano) Cincinnati, publications of, 
Harvard College, Annals of, 2 
Ocean, peangt agate ten of pene 
dia. L oa 
Oxybarym 
Ozone, a a oe A402. 
y 
Packard, A. S., Zoology, 2 
Patterson, use of the Taltrope for tele- 
graphic © 8. 
501 
m, S. FF, hee rig om 
Peo 8 i; ‘childrenite 
te containin md manganese, 367. 
Bebe i, Metallurgy, 3 
Perry, a dispersion photom 319. 
Peters, C. the gee Dido, 130. 
the Ae eet Lilaea, Oe 
Petroleum, yield of, 
Peyritsch, J., panes Maximilian, SSE. 
hosgenégas, action of on ammoni 
P 226. 
« Phosphorus, formation of ozone by slow 
oxi 
xidation of, 402. 
Photographic image, developers of, Lea, 
Photometer, new pemage 319. 
Pickering, ; ls of on Observa- 
ry of Harvard Coleg ; 
tet, R., seeds en rs ere 
Planet neg rane of of, Peters, 130. 
Plane toids, pamien a Pickering, 250. 
nen volatility of in — 65. 
e of the, 
Polavition, uinsachedl 
elec ro-magnetic aired ‘of plane 
ol, 
Prescott, A. B., Qualitative Chemistry, 
Pres ton, bot 
Prime, R, Jr., 
crystallization, 485. 
Catalogue of Geological 
rina 
Pri 
es Plant: 
sone riceadie int 145. 
RC. Ay is io names of Brit- 
R 
Rathbun, R., age of Peed emp Gneiss, 324. 
Eozoon fro’ 25. 
mariong'? 4 power oe chemical constitu- 
Ricketts, Notes on Assaying, 147. 
po Sg Cotton har 248. 
‘ockwo G., notes on earthquakes, 
, 334. 
Rodwell, G. F, Vesuvius, 334. 
Roe oemer, Ff; Lethza Geognostica, 156. 
3, W. we new diffraction ruling en- 
Ai 
an , O4. 
en O. N., reflexion of sound-waves, 
i madi igo in afr est: 
Root, O., das te) Wollastonite, 239. 
stp F, temperature of the sun, 144. 
nd, a es mechanical equivalent 
ak heat, 
aieon’s 8 blasts light, 331. 
