500 



INDEX. 



Penfield, S. L., composition of howlite, 220 ; 



triclinic feldspars with twinning striations 



on the brachypinacoid, 390. 

 Penzig, 0., Studi botanici, etc., 494. 

 Photography applied to flight of birds, 399 ; 



by vital phosphorescence, 31 L ; relation of 



silver salts to, 33, 384. 

 Photometer, Pritchard's wedge, 401. 

 Planchon, J. E.. Ampelideae, 490. 

 Platinum, action of, on gases, 64; and silver, 



comparison of radiations from melting, 227. 



R 



Radiation, measurement of, Hutchins, 466 ; 

 from melting platinum and silver, 227. 



Radlkofer, L., Serjania Sapindacearum Genus 

 monographic description, 493. 



Resistance, electrical, of antimony and cobalt, 

 151; unit of, see Ohm. 



Riggs, R. B,, meteoric irons, 59; so-called 

 Harlem indicolite, 406. 



Robinson, P. C. clay from Parmington, Me., 

 407. 



Rockwood, C. G-., Jr., Japanese seismic sur- 

 vey, 68. 



Rominger, C, Primordial fossils, Canada, 490. 



Roscoe, on the Daltonian atoms, 315. 



Sachs, J. von, Physiology of Plants, 410. 



Salt, rock, dispersion of, 67. 



Schumann, M„ criticism of Morley on the 

 amount of oxygen in air, 67. 



Seismic survey, Tokio, 68. 



Silver in volcanic ash. 159. 



Solids, flow of, Hallock, 277. 



Spectra, absorption, of liquid oxygen and 

 liquefied air. 63 : of hydrogen, oxygen and 

 water vapor, 399. 



Spectroscope, new photographic, Hutchins, 58. 



Sperry, E. S., composition of howlite, 220. 



Sperry, F. L., triclinic feldspars, 390. 



Springer, F., morphological relations of sum- 

 mit-plates in Mastoids, Crinoids and Cys- 

 tids, 232. 



Steel, effect of magnetization on viscosity and 

 rigidity of, Barus, 175 ; viscosity of, and 

 relation to temperature, Barus, 1. 



Stevenson, J. J„ Lower Carboniferous groups 

 of Appalachian area in Penn. and the Vir- 

 ginias, 37. 



Stokes, G. G. ; Beneficial Effects of Light, 401. 



Stoney, G. J., cause of iridescence in clouds, 

 146. 



Suess, water level in enclosed seas, 313. 



Sun, carbon in, Trowbridge and Hutchins, 

 345; Chemistry of, Lockyer, 228 ; elements 

 in, Hutchins and Holden, 451; oxygen in, 

 Trowbridge and Hutchins, 263, 



Taschenberg, O., Bibliotheca Zoologica, II, 

 412. 



Technological Quarterly, 80. 



Thermometer bulbs, effect of pressure on, 67. 



Threads of glass, etc., production of very fine, 

 311. 



Tornado predictions, verification of. Hazen, 

 127. 



Trowbridge, J., oxygen in the sun, 263; car- 

 bon in the sun. 345 ; physical abstracts, 66, 

 150,227,309,399,484. 



Vines, Practical Instruction in Botany, 492. 



Vision, binocular, phenomena of, LeConte, 97. 



Volcano — Elevation of cone in Kilauea by 

 inflowing lavas, Dodge, 70 ; History of Kil- 

 auea, Dana, 81, 349; Kilauea in 1880, 

 Brigham, 19. 



w 



Wachsmuth, C, morphological relations of 

 summit-plates in Blastoids, Crinoids and 

 Cystids, 232. 



Walcott, C, D., genus Archeocyathus of Bil- 

 lings, 145 ; fauna of Upper Taconic of 

 Emmons, Washington Co., N. V., 187. 



Ward, Flora of the Laramie Group, 487. 



Water, analyses of geyser, 174; level in en- 

 closed seas, variations in,313. 



Wave-lengths, absolute, 400. 



Websky, M., Crystallography, 408. 



Wells, H.L., bismutosphasrite from Conn., 271. 



White, C. A., geological abstract, 232. 



White, I. C, bowlders at high altitudes along 

 some Appalachian rivers, 374. 



White, J. C, Dermatites venenata, 410. 



Whitfield, J. E., analyses of natural borates, 

 etc., 281 ; Rockwood meteorite, 387 ; of 

 meteoric irons, 472. 



Willey, H, Study of Lichens, 75. 



Williams, G. H, serpentine at Syracuse, N. T., 



137 : minerals of Baltimore, 160 ; twin crys- 



• tals of pyroxene, Orange Co.,'N. Y., 275. 



Winchell, A., unconformabihty between Ani- 

 mikie and Vermilion series, 314. 



Wind, prevailing direction of, Hazen, 461 ; 

 vane, theory of, Curtis, 44 ; velocity and 

 pressure, Hazen, 241. 



Woodward, H. B., Geology of England and 

 Wales, 158. 



Zoological Bibliotheca, 412. 

 Zoology — 



Birds of Guadalupe Island, 80. 



Seal, West Indian (Monachus tropicalis),75. 



See further under Geology. 



