INDEX 



403 



PAGE 



Glycerine dressings, 282 



" nature of, 282 



Gold and silver of the world, 323 



" divided, Faraday's observations 



on, 2T2 



" veins, possible origin of, 307 



GOLD'S automatic steam-heating appara- 

 tus. 52 

 Giades, ascending, improved railway 



apparatus for, 55 



Grate, Foering's, 67 



Gravity, specific, new appaiatus for 



taking, 216 



Greenland, great glacier of, 342 



Greensand, its origin, and present for- 

 mation, 303 

 Great Britain, recent progress of agri- 

 culture in, 292 

 Guanos of the Atlantic, 242 

 Gulf Stream, agency of, on the peninsu- 

 la of Florida, . 309 

 Gun barrels, improved, 84 

 Gun-Cotton, new, 292 

 Gun, monster, 87 

 Gunpowder, fired, pressure of, 175 

 in proved manufacture of, 82 

 Guns, shot, improved, 86 

 Gutta Percha photograph, 207 

 Gyroscope, the discovery, construction, 

 and explanation of, 191 



Haarlem Lake, drainage of, 60 



Hangings, paper, in oil colors, 96 



Harrow, iron, 129 



HARVEY'S dead spindle, 94 



Hat felting machines, improvement in, 95 

 HATES. Dr. A. A., 242, 324 



Health, effects of color on, 212 



Heat, light, &c., researches respecting, 162 



" of the sun, source of the, 160 



Helices, substitute for copper wire in 



the construction of, 143 



Himalayas, height of, 306 



Hirundine propeller, 40 



HOLLY'S elliptic rotary pump and steam 



engine, 67 



Hook, fish, improved, 115 



Horse power, Hunt's, 131 



Hotbed glasses, improvement in, 121 



Houses, dwelling, uses, conveniences, 



and economy of gas in, 226 



Hydrogen, reduction of metals by, 274 



Hydro-steam engine, 126 



Ichthyosaurus, skin and food of, 341 



Images, stereoscopic, on various pheno- 

 mena of refraction through semi- 

 lenses, producing anomalies in the 

 illusion of, 199 



India rubber, shirred goods, improve- 

 ment in the manufacture of, 97 

 Inks, experiments on, 283 

 Insects, fossil, of the tertiary marls of 



Croatia, 339 



Insects, resistance to cold, 370 



Instrument, Crandall's surveying, 



" new drawing, 118 



Iron, accumulation of the proto-carbo- 



nate in the coal measures, 

 " annual production of, 

 " cast, turnings, 79 



" churches, 81 



PAGE 



Iron, forged, composition of some varie- 

 ties of, 255 

 improved method of refining, 266 

 improvements in quality of, 74 

 in the manufacture of, 25 

 manufacture, present position of the, 75 

 on the manufacture ot; 268 

 pavement, Ellithorp's, 82 

 " (pig) and steel, improvement in the 



manufacture of, 267 



" tubular ships, 39 



" waste of. on a farm, 79 



Ivory, Mayall's photographic, 207 



Japan cotton and hemp, 

 ' mechanical arts in, 

 Journals, bearings for, 



KOBELL'S stauroscope, 



355 

 99 

 61 



202 



Labels for minerals, 343 



Lamps and gas lights, shades for, 112 



Lattice plant, 348 



LA WES & GILBERT, their experiments, 293 

 Leaves and flowers, plaster casts of, 117 

 Lead, meteoric, 832 



LEA, ISAAC, on the fossils of the new red 



sandstone of Pennsylvania, 335 



LEE & LARNED'S steam fire engine, 59 



Life-boat, Berdan's compressible, 38 



Light, artificial, for taking photographs, 206 



" and electricity, engraving by, 211 



" heat, &c., researches respecting, 162 



" houses, improvement in, 214 



Lightning, on the form of, 137 



Lime, phosphate of, its composition 



found in waters naturally, 232 



Line, sounding, and log, combined, 122 



Lithium, atomic weight of, 232 



LIVERMORE'S barrel machinery, 100 



LIVINGSTON'S researches in Central Af- 

 rica, 386 

 Locomotive, hot air, 



Locomotives, coal burning, 53 



LOFTUS'S researches in Southern As- 

 syria, 392 

 Log and sounding line combined, 122 

 Loom, twilled and plain weaving in one, 96 

 Looms, bag, 94 

 LOUGHRIDGE''S self-acting car brake, 54 

 Lunar mountains, drawings of, 12 



M'BRIDE'S flax-scutching machine, 90 



Machinery and processes, agricultural, 



recent improvements in, 127 



" barrel, Livermore's, 100 



" carding, 93 



MACKENZIE'S blowing machine, 68 



Machines, hat felting, improvement in, 95 



Magnet, the, on the influence of the heat 



produced by, on bodies in motion, 149 

 Malaria, on the origin of, 278 



Man and animals, relations between, 349 

 Manuscripts, ancient, application of pho- 

 tography to the copying of, 205 

 MARCOTJ'S geological map, inaccuracies of, 8 

 Maryland Agricultural College, 13 

 Massachusetts, Eastern, protozoic age of 



altered rocks of, 



Massachusetts, industrial resources of, 104 

 MATTEUCCI'S experiments on electro- 

 physiology, 356 



