INDEX 



PAGE. 



Abbot's Horometer, 256 



Acoustic phenomena, new, 250 



Actinic power of the sun, 211 



JErostation, experiments in, 85 



Air in the bones of birds, 392 



Alkalies, and Alkaline earths, electric 



conducting power of, 145 



Alloys, new, 295-6 



Alum, use of in bread, 

 Aluminium, alloys of, 289 



manufacture of, 287 



new applications of, 333 



Aluminium, use of in bells, 74 



American Association for the Advance- 

 ment of Science, 



Ammonia in Dew, 343 



Anaesthetics, application of, 317 



" u new, 318,319 



Angle, trisection of, 144 



Arboriculture, new facts in, 380 



Arsenic, use of ill steeping grain for 



seed, 340 



Art, influence of upon organic struc- 

 ture, 386 

 Art in nature, 85 

 Astronomy, recent progress of, 394 

 Atlantic, gales in, 402 

 Atlantic telegraph, battery for, 158 

 Atmosphere, has the moon an ? 395 

 Atmosphere, origin of electricity in, 151 

 Atmospheric circulation, 408 

 Aurora, origin and cause of, 174 

 seen at Point Barrow, 175 

 Axles, new mode of lubricating, 49 ; 

 Axles, railroad car, strength of, 60 



BAILEY, Prof., microscopic collec- 

 tion of, 386 

 Balls, concentric ivory of the Chi- 

 nese, 



Barometer, self-indicating balance, 253 



Barometers, new, 253, 255 



Baskets, new method of making, 110 



Battery, galv. Doat's new, constant, 160 



Jedlik's improved, 162 



" " Kuhn's, 160 



of triple contact, . 161 



Batteries, Galvanic, improvements in, 160 



Battery of the Atlantic telegraph, 158 



Beach, M. Y., improved printing press, 98 



Bell-metal, 73 



PAOE. 



Bells and Bell Founding, 71 

 Bessemer question, present state of, 293 

 Birds, existence of air in the bones of, 392 

 Boats, Clifford's invention lor lower- 

 ing, 38 

 Boilers, steam, feeding by meter, 41 

 improvements in, 42 

 mud pockets for, 43 

 safety escape pipe for 44 

 Wright's improved, 42 

 Bombs, manufacture of, 89 

 Bones, solubility of in water, 305 

 Boron, interesting researches on, 284 

 Bread, detection of alum in, 338 

 Bread-kneading machine. (Berdan's) 112 

 British Association for the Promo- 

 tion of Science, 4 

 Bronzes, restoration of, 295 

 Brooklyn water-works, engines of 45 



Cable, submarine Atlantic telegraph, 



deposition of, 172 



Calculating machine, Scheutz's, 78 



California, mammoth trees of, 385 



Capillarity, influence of temperature 



on, 205 



Car- wheels, improvement in the man- 

 ufacture of, 48 

 Carbon, formed from gas, 272 

 Carbon, pure, use of as a medicine, 343 

 Carbon, sulphuret, industrial employ- 

 ment of, 308 

 " sulphide, new, 311 

 Cartridges, improved method of man- 

 ufacture, 90 

 Castor oil, 315 

 Cayendy's Tripod, 256 

 Chichester, L. S. 67 

 Chimborazo, ascent of, 331 

 Chromium, and its alloys, 281 

 Circle, Quadrature of. 143 

 Clay-stones, origin of, 295 

 Cloth, rendering water-proof, 100 

 Coast, sea, of L. Island and Xew 



Jersey, subsidence of, 352 



Coinage, discoveries in relation to, 68 

 Collodion, preparation of for surgical 



purposes, 328 



Collodion Processes, resume of 234 



Color of dissolved salts, effect of heat 



on, 



208 



