INDEX. 



417 



PAGE. 



Hematite, production of, 295 



Holmes, Dr. E. S., Corn-husking ma- 

 chine 114 ! 

 Hopkins, Prof. "NY. R., So 

 Horometer, Abbot's, 256 

 Human Remains, supposed fossil, 376 

 Hunt, T. S., 209 



Ice, curious phenomena of, 266 



u plasticity of, 2GT 



Impossible Problems, US 



Inks, new, preparation of, 320, 321 



Inventions, recent French, 27 



Iodine, crystalline form of, 271 



Iron and steel, hardening of, 70 



Iruu, coating with copper, 76 



;t " ki glass, 75 



" -with alloys, 76 



Iron, fracture of, 58 



Iron, malleable, improvement in the 



manufacture of, 78 

 Iron, meteoric, full of in South Amer- 

 ica, 37 

 Iron, native, of Liberia, 370 

 Iron ordnance, strength of, 87 

 Iron, targets, experiments, on, 

 Isothermal lines, simultaneous, 203 

 Ivory, factitious, photographs on, 230 



Journal-boxes, improvement in, 48 



Kalotrope, the, 238 



Keel, Maskers sliding, 3 I 



Kelp, manufacture of [statistics], 105 



Lactic acid in vegetables, 33'1 



Lakes, of Eastern Asia, 

 Lathe, Walton's automatic, 112 



Leather, Artificial graining of, 105 



Leather, rendering water-proof, 101 



Lenses and reflectors, implements in, 221 

 Lenses, centering of, 224 



Lenses, convex, determining the focal 



length of. 221 



Light, interference and refraction of, 211 

 Light of suns, meteors, and tempo- 

 rary stars, 214 

 Light, recent discovers in relation to, 210 

 Light, relation of gold to, 217 

 Li "lit, solar, influence of upon com- 

 bustion, 198 

 zodiacal, 402 

 Lightning Conductor, new, 152 

 Lightning, photographic effects of, 22 J 

 Liquids, spheroidal state of, 201 

 Liquors, u Age: !.:." 



Li :;ors, to prevent boiling over,. 103 



J, com iti.-es, coal-bui-nii:-/, 

 Locomotive, new foim of, 47 



t% I'P' ta :' '- improved, 47 



London, excretory products ( . Ci-J 



L iii-i'itude of Greenwich and Paris, 



(', termination of. 



Lunar and terestiial motions secular 

 variations of, 



Made crvstals, formation O- 29S 



Magnesium, the metal, 279 



M:'.' r netisin, recent progress of terres- 

 trial, 20, 173 

 Manganese, metallic, preparation and 

 properties of, 230 



PAGE. 



Manuscripts, photo'phic fac similes of, '233 

 Marble, imitation of (Penrhyn), 106 



Measurement, standard lor microme- 



tric, 83 



Measures, for mechanical engineering 



work, 82 



Mercury, heat-conducting power of. 205 

 Metal, experiments on the transmuta- 

 tion of, 270 

 Metals, change of position of the par- 

 ticles of by percussion, 58 

 Metals, influence of on radiant heat. 206 

 Metals, preservative preparation for 



coating, 77 



Meteors, periodic, height of, 400 



Meter, feeding steam-boilers by, 41 



Micrometric measurement, standard 



for, 83 



Microscopic collection of Prof. Bailey, 336 

 Military resources of France, 23 



Milk, artificial, 310 



Mississippi, bayous and delta of, B'O 



Mist, vesicular, theory of, 2C5 



Molten substances, on some phenom- 

 ena in connection with, 276 

 Moon, has it an atmosphere ? 335 

 Mortars, construction of 3o inch, 87 

 Motion, perpetual, 142 

 Mountains of N. Carolina, height of, 358 



Xnture printing, new system of, 93 



Nervous action, rrp'clity of, 251 



Nitrogen, origin cf in Vegetation, 337 



Obituary for 1857, 410 



Oil?, Fats, &c., improvement in the 



manufacture of, 314 



Oil, Linseed, new method of treating, 3:9 

 Ophidian, new fossil, 376 



Opthalmoscope, the, 233 



Ordnance, introduction of heavy into 



the navy, 



iron, strength of, 



Oreide, a new alloy, 295 



Ozone, observations of in Canada, 3i6 

 Ozone, researches on the prod'tion of, 344 



Paper, rendering water-proof, 100, 101 

 Paper, 4i parchment," 2-4 



Paper, Schonbein's Electrical, 145 



Paramagnetic bodies, disposition of 



force in, 176 



Perfumes, improvement in the manu- 

 facture of, 329 

 Phosphorus, crystalline form of. 271 

 Photo-galvanography, 229 

 Photo-heliogra] h, 219 

 Photographic lac similes of ancient 



manuscripts, ~" : 1 



Photographic results, curious, 233 



Photographs, Crayon, 234 



Photographs for wood engraving, 

 Photographs on factitious ivory, L:JJ 



Photography, miscellaneous improve- 

 ments in, 231 

 Photogra] !:s of fixed stars, 2! 7 

 Photographs, transparent enamel, 

 Pliy.--;.li.i_ lual researches, interesting, 330 

 Planets, new, discovered in 1S57, 394 

 Plaster of Paris, method of hardening. 107 

 Poo-. M. Andres, 226 

 Portraits, Newcll's Photographic, 234 



