592 



INDEX. 



Asphaltuui, vein of, 250. 

 Asten,Von,49. 

 Asthma, treatmeut of, 534. 

 Astronomical observations at Mannheim, 



38. 

 at Mihxu, 38. 

 Astronomy and mathematics, 1. 

 Atmosphere, absorption of solar heat by, 

 150. 

 ammonia in, 85. 

 constitution of, 105. 

 moisture in, 91, 94. 

 ofVenus,27, 29. 

 over the Libyan desert, 130, 

 npper currents of the, 106. 

 Atmospheric dust, iron in, 133. 



magnetic particles in, 

 132. 

 electricity, 170, 

 lines of the solar spectrum, 



154. 

 moisture and forests, 77. 

 pressure and phases of the 



moon, 133. 

 pressure, distribution of, 90. 

 refraction measured, 187. 

 Atomic weight of cerium, 201. 

 Atrophia and morphine combined, 534. 

 Atwater, Prof. W. O., 371. 

 Aubel, 4S0. 



August's psychrometer, 90. 

 Aulacodiscus oregonus, 341. 

 Aurora and terrestrial magnetism, 75. 

 Borealis, height of, 132. 



periodicity of, 96. 

 Australian fishes, some curious, 319. 

 Autumn planting of potatoes, 368. 

 Auwers, 18, 33. 



Award to the Army Signal-office, 109. 

 Awnings, water-proof, .511. 

 Axis of the earth, changes in, 78. 

 Axolotl, habits of the Mexican, 317. 

 Ayrton and Perry, 175. 



B. 



Baden-Pritchard, 482. 



Bagley, Governor, 399. 



Bailev, Prof., 273. 



Baird", Prof., 304. 



Baiard, 541. 



Balbiani, Prof., 280. 



Balfour, 296. 



Ballooning, scientific, 449. 



Balloons, clouds and winds observed from, 



112. 

 snow-formation observed from, 



118. 

 Bamboo cultivation in France, 306. 

 Barham, 72. 



Bark, growth and pressure of, 347. 

 Barometer, a very delicate, lOS. 



accuracy of aneroid, 88. 



acted on by air in motion, 87. 



convenient form of mercurial, 

 108. 



the aneroid, lie. 

 Barometric gradient, 100. 



pressure during winds, 115. 



pressure in Europe, S3. 

 Barral and Salvetat, 502. 

 Barrett. 192. 

 Barth, 45. 



Bartlett and Son, 386. 

 Barycentric theorem, Somoff's, 54. 



Baryta-green, 493. 



Basalt columns, formation of, 70. 



Bastian, Prof., 287. 



and Tyndall, controversy of, 281. 

 Bastie, De la, 512, 513. 

 Bathometer of Dr. C.W. Siemens, 235. 



soundings, table of, 237. 

 Bathybius, 342. 



Baton, use among Egyptians and Jews, 291. 

 Batrachia, blood-corpuscles of, 274. 

 Baube, 185. 



Baudeira, Marquis Sa de, 541. 

 Baudet, 31. 

 Baudrimont, 35S. 

 Bauer &Co.,4S7. 

 Baumhauer, 219. 

 Bayer, Von, 119. 



Beardslee, Commander L. A., 137. 

 Beccari, Dr.,359. 

 Becher, Rear-Admiral A. B., 541. 

 Bechler, G. R., 252. 

 Becquerel, 77. 



Beech-bark, waxy matter on, 349. 

 Beer, condensing for preservation, 519. 

 Beetles, metamorphoses of, 325. 

 Belavenetz, 162. 

 Bele,Vou, 429. 

 Bell, John, 407. 

 Bennett, A.W., 360. 

 Bergland, Lieut., 264. 

 Berkeley and Desmazieres, 3C4. 

 Bert, Paul, 2SS, 450. 

 Bertelli, 72. 



Berthelot, 197, 214, 216. 

 Berthold, 498. 

 Bertrand, 221. 

 Bessel, 23, 24. 

 Bessels, Dr., 344. 

 Bessemer process, 432. 

 Beta Persei (Algol), 19. 

 Betelli, 207. 

 Bezold,Von, 122, 130. 

 Bichromated gelatin for water -proofing, 



4S9. 

 Biereus de Ilaan, 43. 

 Binnie, A. Il.,92. 

 Biot, 231. 

 Bird, Freder, 541. 

 Birds, habits of, 312. 



in Massachusetts, decrease of, 309. 



migration of, 311. 



of Guadalupe, 360. 

 Bischoft'and Leuckart, 275. 

 Bisulphide of carbon as an antiseptic, 207. 

 Black for straw hats, 491. 



with cerium salts, 491. 



for wool, new, 491. 



spots on the scales of fish, 323. 

 Blackboards, varnish for, 495. 

 Blaen,W.J.,31. 

 Blake, Dr. James, 167. 

 Blanford, Henry, 126, 127. 

 Blazek, Prof.,65. 

 Bleaching sponges, 501. 

 Bleek,Dr.W. H. D.,541. 

 Blochmann, 149. 

 Block, Dr. Eugene, 152. 

 Blood, conversion of arterial into venous, 

 2S4. 



do acids coagulate the, 284. 



in typhoid fever, 532. 



photographs of, 308. 



preparation of, as powder, 520. 

 Blood-corpuscles of batrachia, 274. 



