350 



INDEX 



Heat, mechanical equivalent of. . . . .100 



•" in niiuL's 75 



Heavy modern machinery 82 



" bhist 54 



Heif^hts, to measure 80 



Heat, reflection of. 190 



Hcaton steel process, Bessemer on 



the 64 



Heat reflected from tlie moon's sur- 

 face 188 



Heating of bodies by rotation in 



vacuo 172 



Heat '. 18C 



" and the electromotive force of 



piles 148 



House-liAing 54 



How to make paper transparent 135 



Hot springs, organisms in 308 



Human longevity 281 



" remains 338 



" " of the cave of Bruni- 



quel 341 



Hydrogen gas a metal 181 



" the metal 178 



" Graham's experiments 



with 177 



Hydrogenium 104 



Hydraulic scrapings of the Torquay 

 Water 3Iain 134 



Ice, new method of making 170 



•' as an agent of geological change,25fi 



Illuminations, portable 90 



Improved mariner's compass SO 



" photographic paper 127 



" oualitative filter 212 



Increase or weigiit during combus- 

 tion 174 



Ineradicable writing 1.!;) 



Indians and negroes, S. American.. 284 



Inverted siphon 55 



Indo-European telegraph 107 



Indigo, solubility of. 207 



Insects' wings, velocity of during 



flight 307 



India, railways of. 16 



Insulation ofthe Atlantic cable 152 



Induction coil at the royal polytech- 

 nic 158 



Insects, preserving 307 



Inclosed crystals in diamonds 222 



Inoculabflity of tubercle 300 



Iodine, estimation of. 229 



Iron, smelting, carbonizing, and 



purifying of 63 



" method of i)roducing a black 



shining varnish on 129 



" ships, process for the preser- 

 vation of tbe bottom of.. 115 

 " stoves, unhealthfulncss of ...272 



" and stone, cement for 133 



Irrigation, effect of. ^ 2t)o 



Iron, preparation of pure 106 



Ixtle fibre 100 



Jargonium 217 



Joy hammer 132 



Kent's cavern 342 



Lake Superior, copper mines of 264 



Lager beer, analysis of. 203 



Large blast 55 



Level between lied Sea and the Med- 

 iterranean 267 



Leichtenberg's experiment and the 

 mineralogical analysis of rocks., 153 



Leather, cement for i:{0 



Lightning, spectrum of 331 



Lithographic researches 265 



Light of Uranus 330 



Lime light, magnesia blocks for the. 143 



Little-known fibrous plants 78 



Light, zirconia 141 



*' action of 143 



" decomposition produced by.. 147 



" luminous effects of llK) 



'* house, gas for 90 



Lichens, reproductive organs of. 309 



Light-houses, on the glass used for . 81 



Lights, ship's 85 



Life of American vessels 84 



Light rolling stock ."{6 



Liipielied hydrochloric acid 220 



Life and species, derivative hypoth- 

 esis of. 268 



Light, oxyhydrogen 65 



Lining for fire-proofs 131 



Local attraction :tt0 



Longevity, human 281 



Locomotive fuel, peat for 37 



Locomotives, English, durability of.37 



Luminous efl'ects of light 100 



Luting 225 



Mammals, changes in the distribu- 

 tion of the lar^e American 251 



Materials, conducting power of 164 



Magnetism 150 



152 



Matter, elements of 18^5 



Mauritius, extinct bird of. 289 



JIan in the quaternary period 287 



Mammoth, tusks of the 300 



Margueritte's method of reflning 



sugar 198 



Mattoon expedition, observation of, 



on the eclipse of 1800 310 



Mammoth, extinction ofthe 261 



Madder, new dye from 206 



Marrow of the bones, function of 



the 209 



Maximum point of the density of 



water 188 



Magnesia blocks for the lime light.. 143 



Maine, surface changes in 249 



Manufacture of chlorine 210 



" glucose I'.K) 



•• soap 200 



" sugar 100 



Magic diamond 82 



Marshes, making foundations in 116 



Manufacture, peat 74 



Blachinery, heavy modern 82 



Matters, newest coloring 82 



Machine, the modern ice 78 



Mariner's compass, improved 80 



Mechanic arts, summary of improve- 

 ments in 128 



Method of jiroducing upon iron a 

 dural>le black shining varnish. ..129 



Megalithic monuments 304 



Mechanical equiyalent of heat 100 



