102 INDEX. 



HoRSFiELD (Dr.)> on the antshar or poison-tree, and mode of pre- 

 paring its poison, ii. 332. Results of his experiments with it, 33G 



Horticultural Society, sketch of the history of, vii. 366. Its 

 regulations and objects, 367. Sketch of the proceedings of, 

 viii. 339. XV. 105 



Horticulture, state of, in ancient times, x. 52. Progress of, in 

 Europe, 53. Its influence on society, 55 



Hospitals at Batavia, notice of^ vii. 4 



.Hours, table of equivalents for converting into space, xiii. 364 



Houses, observations on the best mode of warming and ventilating, 

 xi. 229 



Howard (Luke, Esq.), observations of, on the extraordinary de- 

 pression of the barometer, xiv. 169 



■ (Dr. W.), description of a differential thermometer, 



viii. 218 



Hudson (Mr. W. B.), improvement by, in gas illumination, x. 462 



Hughes (Rev. Thos.), remarks on a passage in his Travels, rela- 

 tive to the Athenian temples, x. 204 



Humboldt (M.), botanical researches of, in America, ii. 52 



. account by, of the volcano of Purace, xviii. 404. And of 



the sulphur mountain of Ticsan, 406. On obsidian thrown out 

 by the volcano of Sotara, 408. On the form of hailstones, 41 1 



(Baron), observations of, on the geographical distri- 



bution of ferns, iv. 57. Notice of his remarks on the caverns 

 of rocks, and on their relation to the strata in which they are 

 found, 85 



on the natural family of the grasses, v. 44 



on the orchidese, vi. 67 



on the causes affecting the distribution of vegetable 



forms, xii. 338 



on the geography of plants, xiii. 162 



analysis of his Essai Geognostique^ xix. 306. Remarks 



on his style, 307. Specimen of it, 309. Comment on his vague 

 and indefinite assertions, 310. His character of Werner, 319. 

 Remarks on it, 320. Exposition of his extravagant pretensions, 

 323. His geognostical pasigraphy, 324. Remarks on it, 325 



