INDEX. 



122 — Qnantity of, in oximuriatic 

 acid, 129 — Its combinations with oxi- 

 muriatic gas, 268 



Gas, oximuriatic, its nature, formation, 

 and "various experiments on, 39, 1 12, 

 133, 222, 268 



Gasses injected into the blood vessels of 

 animals, 314 



Gauthey, M. his mode of estimating the 

 force of a stream, 69 



Gay-Lussac and Thenard, Messrs. on 

 the peroxides of potash and soda, 36 

 38, 11 5-— On Mr. Davy's three papers 

 relative to the metals of the alkalis, 

 59— On the dip of the magnetic 

 Xjeedle, 77— On the combinations of 

 gaseous substances with each other, 

 and the compounds of nitrogen, 79 — 

 On the absorption of oxigen liy pot- 

 ash and barytes, when heated, 115, 

 118, 224 — On the quantity of hi- 

 drogen and ammonia contained in the 

 amalgam of ammonia, 880- On the 

 decomposition of some vegetable or 

 animal substances subjected to the 

 action of heat, 382 



Geoffroy, M. on the classification of 

 apes, 239 — On two birds hitherto im- 

 perfectly known, 239 — On tortoises, 

 id. 



Gordon, Dr. on the qualities of sound, 

 236 



Grape house, method of constructing, 

 109 



Grasses, their fructification, 158— Ger- 

 mijiation of, 238 



Gr6goire, M. on an ancient bell of very 

 loud tone, 315 



Guyton de Morveau, M. 79, 155 



Gypsum, primitive, a stratum of, 202— 

 Other strata, 310 

 H. 



Hair of the head, occasional increase 

 and decrease of the bulk of, 303 



Hall, Rev. James his substitute for 

 hemp, prepared from bean stalks, 278 



Hall, sir J. his experiments on beat 

 modified by compression, 151 



Hall, M. esq. on the nature of heat, 



215, 257 



Harlem, Royal Society of, its proceed- 

 ings, 3 15--Prize questions, 316 



Harrows, expanding, for cleaning land, 

 302 



Hassenfra^z, M. on the disoxidation of 

 oxide of iron by hidrogen gas, 370 



Heart, motion of the, how far «i- 

 fluenced by the brain, 359 



Heat, animal, experiments on, 366 



Heat, nature of, 215, 257 — Its sources, 



216, 259-rIts motion, 217, 260^ 

 Effects, 218, 264— Capacity, 220, 

 266— Vibiation, 258 



Hemp, substitute for, 161,278 



Henly, Mr. on electric conductors, SQ7 



Herschell, Dr. his experiments on the 

 transmission of sunbeams through 

 transparent mediums, 2G0 



Higgins, Mr. W. his hypothesis of the 

 composition of water, and on the cori- 

 stitution of sulphuretted hidrogen,124 



Horn silver, analysis of, 225 



Horsburgh, J. esq. notice of his India 

 Maritime Director j/, 152 



Horses, how to relieve w^hen fallen dowu 

 in the shafts of loaded carts, 326 



Howard, Mr. illustration of his theory 

 of rain, 142 



Humboldt, M. Von, on the respiration 

 of crocodiles;, 240— And of fishes, 312 



Hutton, Mr. J. jun. his improved reap- 

 ing hook, for corn, 171 



Huttonian theory of volcanoes, 15^ 



Hydrophobia, prize essays on, 320 

 I. 



Ibbetson, Mrs. on the interior of plants, 

 1— On Forsyth's method of reanimat- 

 ing old trees, 5 — On the fir tribe, and 

 its arrangement, 202, 295— On the 

 motion of barberry flowers, 213 



Iceland, geological remarks on, 151 



Ichthyology, recent researches in, 240 



Imaginary quantities, defective algo- 

 rithm of, 254 



Implement for extirpating flocks ai(id 

 thistles, 301 ^ 



Imrie, 



