I87I.] 



(5^5) 



INDEX. 



AERIAL navigation, 140 

 Aero steam-engine, 563 

 Airy, G. B., " A Treatise on Mag- 

 netism " (review), 262 

 Allophane, mineral, 543 

 Aluminium substituted for platinum 



in batteries, 115 

 Aluminous iron ores, 539 

 Ammonia engine, 425 



— solvent power of, 127 

 Angstrom, J. A., spectrum of aurora, 



112 

 Aniline dyes, tinctorial power of, 128 

 Animal mechanics, 397 

 "Annual of Scientific Discovery" 



(review), 535 

 Aplanatic searcher, 419 

 Aqueous vapour, transferation of by 



leaves, 296 

 Armour, J.," Iron and Heat " (review), 



378 



— " Power in Motion" (review), 530 

 Armour and guns, 543 



Arsenic, distinguishing from mercury, 

 407 



Arsenical sulphide, 131 



Arseniferous hydrochloric acid, 551 



Arseniuretted hydrogen in sulphu- 

 retted hydrogen, 552 



Artillery, French, 291 



Ash, incineration of fusible, 552 



" Astronomy Simplified for General 

 Reading" (review), 535 



Atmospheric germs, theory of, 153 



Aurora, spectrum of, 112 



Autumnal foliage, tints of, 64 



BALANCE floating dock, 393 

 Balloon navigation, 139 



Bannister, S., " Classical and Pre- 

 historic Influences upon British 

 History" (review), 369 



Barker, Dr., illumination of micro- 

 scopic objects, 273 



Barker, E. D., railway brake, 293 



Barometer, manual of, 281 



Barometrical predictions of weather, 

 123 



Battery, improved Daniell's, 122 



Beale, Dr., on high power definition, 

 114 



"Beginning; Its When and How" 

 (review), 527 



Bell, I. L., chemical phenomena of 

 iron smelting, 289 



Bengal lights, 548 



Bennett, A. W., on cross fertili- 

 sation and self fertilisation, 296 



Bidder, S. P., new safety lamp, 288 



Binocular microscope, erecting and 

 others, 417 



Blanford, Mr., normal rainfall of 

 Bengal, 281 



Blast-furnace, improved, 138 



Blood spectrum, method of detecting, 



554 



— test for, 401 



Bohemia, diamonds from, 131 



Boilers, durability of, 141 



Boiling of liquids, 115 



Boiling-point of mixed liquids, 405 



Bones of men who made flint imple- 

 ments ; where are they ? 327 



Bottger, Dr., glue which stands 

 moisture, 130 



Boyd, C. B., new reflecting telescope, 

 107 



Brakes, railway, 293 



Brass and iron uniting, 547 



— coating with copper, 411 



— electro-deposition of, 116 

 Brazil, geology of, 295 

 Break, automatic, 559 

 British rocks and minerals, 286 

 Brockbank, W., effect of cold on 



iron, 289 

 Bromine, action of heat on, 555 

 Browning, J., automatic spectroscope, 



no 



— chromo-lithographs of spectra, 272 



— direct vision spectroscope, 271 



CACAO as food, 401 

 Caissons, stone, 544 

 Capron,J.R., spectrum of aurora, 112 

 " Captain," loss of the, 140 



— stability of the, 544 

 Canals, ship, 293 



