INDEX. 
Parallels, Euclid’s doctrine of, Twining, 
Perrey, A., work on earthquakes, noticed, 
Pace CALE, 
new a 244, 281. 
rs, 
ospho co and platinum, compounds 
508 
ne seer L. M., stability of collodion 
a pMage emitted by the vapor of 
Schi at hen 
phosphor oh 9 latiatts 
Seue, névé of Fuatedal and its gla- 
cie . 
unds containing 
» 227. 
ntai 
Physics, ae and cosmical, Norton, Shelton, a. beavers and beaver-dams, 
planots elements of, Peters, se 495. 
Pla = four outer, on ce relations 
th e mean motions sof the peri-|| 
acts of, Kirkwood, 225, 32'T. 
rei, new, Pe eters, 244, 281. 
riment in reference to 
ses, a eae 226. 
Popa ‘sation om ketones, 
the hoe ak violet 
_chatyant colors in 
— tric, effect of change of, 
on 
Prestwick, Ji; solvent action of water, 
carla tion of the a of 
tain, France ann a 13. 
Biority.: reply to 
Hall, 105 ; nde seg 
Pri: g, Zent 
Pseudom Anceiesa of seein “Fisk 71. 
Pyrometer, acoustic, Mayer, 425. 
Rainier, Mt., height of, 156. 
Rand, T. D, pseudomorphs of serpen- 
; re from Lancaster Co., Pa., 
2. 
— Pea mineralogical investigations 
Reade, . ~ vo on Post-glacial period, | 
on esti of, 
oy. (ite 
4% 
Sh rd, Cc. U., corundum region 
North Carolina fe Georgia, 109, og 
Silver, fluoride of, 6 
omy: 1azzi-, spectra of star-shine, 
Sel analyses t their utility, Hilgard, 434. 
ound, m ae ring wave-lengths, in gases, 
gerry 425. 
ona paper of soe ad son, Mayer,198. 
ha, st “ad vibration in the air, etc., 
Mayer, 
Spectra, a sorption, of of — ete., 59. 
of star-shine, 
age on Soc. of fealy, memoirs, no- 
tice 57. 
Spectru im, distribution of heat i in, Dra- 
, Holden, 423. 
uble, 77. 
Steam boilers, evaporative efficiency of, 
Trow pas 
Stevens, R sagt ig in the 
stamp 4 ot am York City, 88. 
Stokes, ., refraction in Iceland spar, 
Sulphur, estimation of, in coal, ete., Miz- 
Sonlsht chemical efficiency of, 401. 
s chromosphere, magnesium in, 244, 
or ‘‘aagotaens of surface, Ericsson,152. 
= 
Taylor, J. W., separation of pore and 
ceria from zirconia and iron, 
noti 
oo in fiestas spar, 
Reye, T., work on Stitwinas ete., 
noti 
Biagio, ’R,, relation between color an 
Seogra hical distribution in birds, 454. 
pied E., fossil man in Italy, noticed, 
Rocks ood, C. G., recent oh angry rae 
Owen’s Valley earthquake, 3 
Rood, 0. N., discharge of Leyden j ed con- 
nected wets induction coil, 249, 371. 
Rose, G., meteorite of Tbbenbihren, 78. 
tg "la, Zollner’s theory of comets, 
tances we 
aad: wave at Sandwich Is., 331. . 
Time a electric, Langley, 
Trow ge electrical condition of 
gas flam 
Ohm's ine considered 
geometrical a: of view, 115. 
e, W. P., evaporative 
of steam boilers, 81. 
from a 
