94 INDEX. 



Hail, nature of, ix. 424 



Hailstones, form of, xviii. 11 



Hair (human), permanency of, xix. 168 



Hall (Capt. Basil), on a meteoric stone that fell near Bombay, i. 

 117. Results of experiments made by, with an invariable 

 pendulum, xvii. 126 



Hall (Dr.), his suggestion for a register thermometer, iv. 43. 

 Note of, on the formation of spots on cotton goods by stoving, 

 198 



— description of an aerometer for correcting pneumatic 

 experiments, v. 52. Experiments and observations of, on vision, 

 249. On a mode of preserving some vegetable remedies, 366. 

 On the spontaneous combustion of cotton goods which have 

 been imbued with linseed-oil, 367. Memoir of on the combined 

 agencies of water and oxygen gas, in the oxidation of iron, vii. 

 . 55. On M. Gay-Lussac's mode of producing cold, 383 



-< observations on the physiology of speech, xix. 8-16 



-r— — on one of the causes of the movements of the barometer. 



and of the south and west winds, xx. 14-21 

 Hall (Messrs.), experiments of on stoving cotton goods, with 



sulphur, iv. 196. 

 Hallbr's theory respecting muscular motion examined, ii. 225 



' of irritability considered, xiii. 98 



Halley (Dr.), notice of the experiments of, to account for the 



phenomena of magnetic variation, vi. 91 

 Hallucination, observations on, iv. 95 

 Halo (lunar), described, v. 371 

 Haloes, artificial formation of, xv. 367. 

 Hamilton (Mr.), conjectures of relative to the ancient inscription 



on the column at Alexandria, x. 4. Copy of that inscription 



as deciphered by him, 7 

 Hammers (mineralogical) observations on the forms of, xi. 1-10 

 Hampstead parish, population of, v. 309 

 Hancock (Dr.), account of the native oil of laurel, xviii. 47. 

 Hancock (Mr.), process of, for preparing caoutchouc, xvii. 364 

 Hansteen (Prof.), experiments of, for determining the law of 



magnetic attraction, xii. 335 



