37] 
Physical Crystallography, Groth, 1, 77. 
Measurements, Laboratory Course. 
in, Sabine, vi, 74. 
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«| ali Nichols and Merritt, vi, 
and chemical phenomena at very 
low temperatures, Pictet, iv, 253. 
ae prize for researches in, iii, 
Physics (works on) 
Appleton’s, i, 481. 
Atkinson-Ganot, v, 486. 
Glazebrook and Shaw, v, 436. 
Hall and Bergen, v, 255. 
Advanced course, Barker, iv, 426. 
Carhart, ix, 238. 
Practical, Barrett and Brown, v, 524. 
general, Woollcombe, viii, 429. 
Principles of, Daniell, ix, 472; 
Gage, 1, 265. 
and applied 
electricity, Nichols, 
viii, 346. 
Physiko-chemischer Messungen, Hand- | 
und Hilfsbuch zur Ausfihrung, 
Ostwald, vi, 480. 
Physiography, Spencer, iii, 542. 
Pirsson, L. V., 
Mexico, i,61; rutile from Black Hills, 
i, 200 ; crystallographic notes, i,394. 
gmelinite, ii, 57; mineralogical 
notes, ii, 405: sulphur, orpiment 
and realgar in the Yellowstone, ii, 
401. 
datolite, Ont. ,v,100; volcanic rocks | 
from Gough’s Island, S. A., v, 380. 
. geology of Conanicut Island, R. 
i, Vi, a0. 
enargite, vii, 212; 
rocks, Black Hills, vii, 341. 
leadhillite, Missouri, viii, 219. 
complementary rocks and radial 
_ dikes, 1, 116; igneous rocks of Mon- | 
tana, 1, 309, 467; phonolitic rocks 
from Montana, 1, 394. 
Planet, story of our, Bonney, viii,430. 
Planets, new tables for, Newcomb, ix, | 
79 
Platinoid and manganine, thermo- 
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Polar light and cosmic dust, Liveing 
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Polarization Rotatoire, Foussereau, V1, 
152. 
of ultra red rays by means of 
metallic gratings, du Bois and 
Rubens, vi, 397. 
Poole Brothers’ Celestial Handbook, 
v, 528. ' 
Porosity of solid bodies for the light 
ether, Zehnder, 1, 70. 
VOLUMES XLI-L. 
calcite crystals from | 
phonolitic | 
551 
Potential, a Bernoullian term, Becker, 
v, 97; Green’s use of, Becker 
vi, 151. ; 
Powell, J. W., U. S. Geol. Survey re- 
port, 1888-89, iii, 155 ; geologic 
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Prange, allotropic silver, i, 325. 
Prantl, K., Die natiirlichen Pflanzen- 
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Pratt, J. H., chemical composition of 
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optical properties of lithiophilite 
and triphylite, 1, 387. 
Preston, E. D., study of the earth’s 
figure by the pendulum, i, 445; 
latitude observations on Oahu, 
Hawaiian Is., iii, 438; gravity de- 
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in the Hawaiian Islands, ix, 271. 
Preston, H. L., meteorite, Washing- 
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iv, 163. 
Prestwich, J., submergence of Europe, 
vii, 146. 
Price, W. A., measurement of elec- 
trical resistance, viii, 428. 
_Priestley’s eudiometric method, Wank- 
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| Prize-question of Schnyder von War- 
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Proctor, J. R., Kentucky, Geol. sur- 
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Projectiles, motion studied by photo- 
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| Prosser, C. S., Devonian system of 
eastern Pennsylvania, iv, 210; the 
upper Hamilton and Portage stages 
of New York, vi, 212. 
Pulfrich, C., total-reflectometer, i, 431. 
Pumpelly, R., secular rock-disintegra- 
tion as related to transitional crys- 
talline schists, ii, 346; structural 
relations of the Huronian, iii, 224; 
timebreak between Eocene and Chat- 
tahoochee Miocene in Georgia, vi, 
445. 
Pupin, M.1., action of vacuum dis- 
| charge streamers, iii, 263 ; electrical 
and coronoidal discharges, iii, 463 ; 
electrical oscillations of low fre- 
quency and their resonance, v, 325, 
_ 420, 508; resonance analysis of al- 
ternating currents, viii, 379, 473 ; 
automatic mercury vacuum pump, 
| ix, 19; electro-magnetic theory, 1, 
| 396. 
