INDEX. 



H. 



Hager, M. 578 



Hail, formation of, 110 



Hall, Sir James, his experiments on 

 metals exposed to great Iieat under 

 pressure, 70 



Haller on the motion of plants, 261 



Hassenfratz, M. on the alterations that 

 the light of the sun undergoes in tra- 

 versing the atmosphere, 155 



Hatchett, Mr. his artificial tan, 5, 317 



Hauy, M. on the alterations of solar 

 light, 155, 223 



Hazard, M. 79 



Heights measured by means of the ba- 

 romer, 63 



Henry, Dr. his experiments on ammo- 

 nia, and. an account of a new me- 

 thod of analysing it, by combustion 

 ■with oxigen and other gases, 358 



Howard, Mr. his fulminating silver, 237 



I. 



Ibbetson, Mrs. A. on the cause of mo- 

 tion in plants, and what is called the 

 sleep of plants, 114, 273 — On the 

 effects produced by the grafting and 

 budding of trees, 337 — On the defects 

 of grafting and budding, 346 



Iron substituted for timbers in buildings, 

 126 



Irritability of vegetables, 121, 261 



Italian Institute, Transactions of, 314 



Jacquin, Professor, on the vibrations of 



the various kinds of gas, 316 

 Jaume St. Hilaire, M. on the oro- 



banches, 74 

 J. B. on the measurement of heights 



by the barometer, 63 

 Jelly, uniqn of, with tan, 1 

 J. F. qn the introduction of air into the 



blood through the lungs, 307 

 Jury-masts, improved, 44 



King, a sonorous stone, in China, 378 

 Klaproth on meteoric stones, 1 90— His 



analysis of the Chinese rice-stone, w ith. 



some observations on the Yu, 575 

 Krafzenstein, M. on the rice-stone of the 



Chinese, 375 



Lagrange on the eccentricities of ttie 

 planets, 70-On the Cotesian theorem, 

 278— On the action of phosphorus 

 and oxigenized muriatic acid gas on 

 alkalies, 285 



Lake, process for making, 238 



Lampadius, 319 



Laplace on the constant acceleration of 

 the planets, 69 — On the alterations 

 of solar light, 155 — On comets, 

 200 ! 



Lectures at the London Hospitals, 79, 

 158 



Lenormand, M. his colourless copal 

 varnish, 67 



Lescallier, M. on the climate of Genoa, 

 78 



Light, theory of, 113 



Light, solar, alterations of, 155 



Lightning, theory of, 109 



Lime, dead, 382 



Link on the anatomy of plants, 73 



Longchamp, M. on narcissuses, 74 



Lote-tree, 74 



Lyall, Mr. R. on the irritability of ve 

 getables, 261 



M. 



Macquer, 70 



Malpighi, M. 337 



Margraff, M- 190 



Marum, Van, on the irritability of the 



vessels of plants, 275 

 Masts, see Jury-masts. 

 Measurement of .heights by 



meter, 63 



the baro- 

 MeJandrij, 



