386 



ANNUAL OF SCIENTIFIC DISCOVERY. 



Gutta-percha, 



" " in electrical insulation, 

 " " tubing, 

 Guyot, Prof, 



Gypsum and indigo in tea, 

 Hall, Prof. James, 

 Harpoon gun, 

 Hart, Sir Henry, 

 Hatteras, Cape, 

 Hayes, Dr., 



Heat and evaporation of the earth, 

 " crystalline combinations by, 

 u of combinations, 

 " plating by, 

 *' polarization of, 

 " production of, by magnetism, 

 Hemp, Chinese, 



Hericourt, M. d', 302, 322, 



Hering, Dr., 



Hermetically-sealed glass vessels, mer- 

 cury in, 

 Herrick, E. C., 

 Hessenberg, M., 



High-pressure stearn in marine engines, 

 Hill, Rev. Thomas, 

 Himalaya, snow line in, 

 Hindoo antiquities, 

 Hippopotamus, Liberian, 

 Hitchcock, Pres., 

 Hodge, Mr., 

 Hoe's printing-press, 

 Hoisting-machine, stea.m, 

 Hollow bricks, 

 Holmes, Prof. F. S., 

 Honey, composition of, 

 Horsechestnuts, starch from, 

 Horsford, Prof., 189, 192, 199, 219, 



Hot-air hexagonal biscuits, 

 Howard, Thomas, 

 Human blood, copper in, 

 " food, blood-spots on, 

 " frame, electricity of, 

 Humphrey, S. D., 

 Hunt, Robert, 

 Huston, A., 



Hydrogen gas, inhalation of, 

 Hydrophobia, cure for, 

 Hygea, the planet, 

 Jce-cave in Russia, 

 Ice, durability of, 



" made by mechanical power, 

 Iceland, climate of, 

 Identity of differently named American 



minerals, 

 of the nummulitic formation 



with eocene tertiary, 

 Ignition, voltaic, 

 Illumination, new mode of, 

 Improvement in grain-separators, 

 in gun casting, 

 in making flour, 

 " in muskets, 



Improvements in locomotives, 



" in the manufacture of 



carpets, 



in metallic compounds, 

 in manufacturing bar- 

 iron, 



in puddling iron, 

 Improved bank-note paper, 



a 

 a 



300 

 112 



77 

 347 

 304 

 283 



45 



63 

 355 

 25(3 

 153 

 213 

 198 



91 

 139 

 168 

 299 

 365 

 217 



208 



119 



91 



28 



34-2 



250 



364 



323 



229 



360 



56 



25 



95 



230 



175 



183 



347 



62 



86 



203 



320 



114 



142 



144 



69 



166 



302 



341 



249 



205 



76 



231 



272 



230 



108 



191 



60 



48 



61 



45 



52 



87 



86 

 85 

 64 



Improved buffers and breaks, 42 

 envelope machinery. 54 

 " locomotive boilers, 38 

 machinery for spinning yarn, 51 

 mode of tempering edge-tools, 90 

 " railway chairs and switches, 41 

 IncombTistible cloth, 176 

 India, barometric variations in, 347 

 India-rubber, discovery in the manufac- 

 ture of, 102 

 Indian corn, to detect the flour of, in that 



of wheat, 184 

 Indicator, lee-way, 70 

 Indigo, preparation of, as a dye, 176 

 " test of the quality of, 177 

 Influence of tides on geological forma- 

 tions, 244 

 Infusorial deposits on the River Chutes, 



in Oregon, 



Ingenious application of electricity, 120 

 Inhalation of hydrogen gas, 166 

 Inorganic constituents of the oat plant, 180 

 Instrument for measuring a ship's ve- 

 locity, 69 

 new optical, 147 

 " new surveying, 43 

 Insulation, electrical, use of gutta-percha, 112 

 Interesting analogy in botany and as- 

 tronomy, 342 

 Interesting fossils, 285 

 Interior of Australia, 357 

 Invention for stopping steam-engines, 



" for the manufacture of steel, 87 

 Inventor of ihe power-loon), 52 

 Iodine, new method of detecting, 178 

 Ireland, black rain in, 348 

 Iron, bar, improvements in, 86 

 " deposits of, near Lake Superior, 263 

 for suspension bridges, 86 

 improvements in puddling, 85 

 method of preventing the oxida- 

 tion of, 89 

 method of soldering cast, with 



wrought, 89 



method of smelting, 85 



phosphorus in, 207 



pipes, cast, 79 



" sheet, 79 

 power of, to resist compression 



and extension, 81 



steam frigate, English, 33 



woven, 78 



Iron-arched bridge, 14 



Irons, finer, manufacture of, 80 



Islands, coral, 239 



fresh water on, 247 



Isolation of amyl, 194 



" ofethyle, 194 



" of methyl, 194 



Israelites, manna of the, 292 



Italy, climate of, 3-19 



Ivory as an article of manufacture, 95 



" flexible, 211 



" to restore decayed, !>5 

 Jackson, Dr. C. T., 151, 105, 202, 273 

 Jamaica, distribution of the testaceous 



Mollusca of, 



Japan, mineral wealth of, 265 



Java, eruption of a volcano in, 234 

 Johnson, Prof. W. R., 270, 275 



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