420 
Plants, sahil species of, in Siberia, 383. 
ervation Ne in winter, 359.” 
Fespration 
— sleep o' 75. 
Platina, imitation 
Polarization : Hehe; 27 
Premium chemical ‘aa medical dis- 
coveries, 
Premiums, French, 
i 0 ag corde “ G. W. Carpen- 
Dctbnatie of copper, 353. 
Pyrometer, steam, W. R. Johnson on, 96. 
R. 
Rail roads, elevation of the rails of, Prof. 
Thomson on, 3 
Rain- gage, A by S. DeWitt, 321. 
Red beets, 201, 
Sy 
ew seg k, 4 
—- natural; of tha te coun- 
tr 
Respiration of plants, 362. 
Robiquet on a new ihetallic dye, 197. 
Ss 
Sandstone, new red, 8, 35. 
Serpentine, 29. 
4a 
INDEX, 
Steatite, 31. 
Stee I; protection ree he rust, 382. 
Swan, American wild, “ Sharpless on, 
83. 
FE. 
copes, achromatic, 358. 
Te nea ar increased, 
powers of, 1 
pies formation of Massachusetts, 36. 
sen cope, new, 370. 
disinfecting 
net Edward, necrol ogy of, 38 
“eeaoany Prof., on the elevation au rails 
on roads of a given curvature, 
Tin. 
Tra ing of trees, 383. 
eset Tongerity 0 of, 379. 
nsplanting of, 383. 
Trilobites, Prof. Eaton on, 165. 
ue. 
Ultramarine, French, 
University of the state at ‘New York, re- 
port of the regents of, 4 
Mi 
Sharples, Dr J.T., on the A 
wan, 83. 
Shepard, ©. Cc. ee on brown lead ores, 307. 
soda alum of Milo, 387 
datholite and iolite, 387. 
Treatise on Mineralogy, 
silicon, D Dr, Hare’s process for, 189. 
il 
f, 198. 
Sines, Sogentr oe sean. rational ex- 
pressions for, 
se be r cotton and linen, of Lichen Island- 
66. 
Smith, Alfred, on the Connecticut River 
Solar eclipse rr 
Sound, limits of ae uty = Br. 
h seas, icebergs in, 
Spafford, H.G., on or 
Is Sabatier, 
Species, new, of plants, i in tan 383. 
Statistics of iron in the 
Stature of the humai 
Steam ter, W. R. Jo 
protec 
ann an 179. 
6. 
Valley of the Connecticut, A. Smith on, 
208.5. 
W. 
Water, good, from a new plant, 382. 
a _ Dr. Meade on the pre- 
paration 
Weeds in pian alleys, destruction of, 
381. 
Wells, bored, use of the heat from the 
water of, 373. 
Westchester County cabinet of natural 
science, 402. 
Western country, natural resources of, 
Whirlwind storms, Capt. Riley on, 1 
— Frederic Philip, — ‘of, 
nés, grease ol of, 1 
Wright E., oe sealed papers by, 74. 
¥: 
Young, Dr. Thomas, memoir of, 232. 
Z. 
Zinc, 61. 
