INDEX. 



493 



Gases, on the disinfecting power of 

 the, 134. 



Gauss (Prof.) on terrestrialmagnetism, 

 166. 



Gell (Sir W.), notice of, 438. 



Geometrical progression, demonstra- 

 tions in, 139. 



Germination, on the chemical changes 

 during, 408. 



Gibraltar rock, magnetic experiments 

 on, 163. 



Gilbert (D.) on negative and imagi- 

 nary quantities, 4. 



, address at the anniversary meet- 

 ing, Nov. 30, 1830, 6. 



, computations for suspension 



bridges, 51. 



Gillies (Dr.), notice of the late, 438. 



Glass balance-springs, on, 391. 



Glisson's capsule, 212. 



Gothic architecture, Sir J. Hall's, 146. 



Graham (Prof. T.) on the arseniates, 

 phosphates and phosphoric acid, 200, 

 209. 



on the oxalates, nitrates, phos- 

 phates, sulphates, and chlorides, 418, 

 453. 



Graham's Island, on an error in its 

 site and origin, 101. 



Granville (Dr.), a special general meet- 

 ing of the Royal Society relative to, 

 415. 



Graphical register of tides and winds, 

 account of a, 33. 



Gravitation, theory of, disputed, 413. 



Gray (J. E.) on the structure of shells, 

 and the economy of molluscous 

 animals, 201. 



on the difficulty of distinguishing 



certain genera of shells, and on ano- 

 malies in the habitations of mollus- 

 ca, 340. 



Greatorex (T.), notice of the late, 83. 

 Greek sun-dial, on the hour lines of, 18. 

 Gregorian telescope compared with 



the Cassegrainian, 350. 

 Griffin (R.) on the internal structure 



of the Platypus Anatinus, 93. 

 Groombridge (S.), notice of, 149. 

 Ground-ice of rivers, 330. 

 Gruggen (J. P.) on the earthquakes 



at Chichester, 338. 



Hale (W.) on a new mode of propel- 

 ling vessels, 48. 



Hall (Dr. M.) on the physiology of 

 the minute and capillary vessels, 45. 



Hall (Dr. M.) on the effect of hot wa- 

 ter upon batrachian reptiles, 45, 47. 



on respiration and irritability in 



animals, 105 ; on hybernation, 106. 



on the reflex function of the me- 

 dulla oblongata and spinalis, 210. 



on the special function of the me- 

 dulla oblongata and medulla spina- 

 lis, and on the excito-motory system, 

 463. 



Hall (Sir J.), notice of the late, 145. 



Halley's comet in 1759, on the ele- 

 ments of, 332; in 1835, 346. 



Hamilton (Prof. W. R.) on a general 

 method in dynamics, 275, 315. 



, the R oyal medal awarded to, 349. 



Harriot's astronomical observations, 

 on, 125. 



Harris (W. S.) on the influence of 

 screens in arresting the progress of 

 magnetic action, and on the power 

 of masses of iron to control the at- 

 tractive force of a magnet, 69. 



on the influence of the sun's 



rays on the magnetic needle, 175. 



on some elementary laws of elec- 

 tricity, 277, 414. 



, the Copley medal awarded to, 



349. 



Harvey (G.), notice of the late, 304. 



Heart, influence of the respiratory or- 

 gans on the, 342 ; influence of the 

 tricuspid valve on the circulation of 

 the blood, 337, 396. 



Hearts, four distinct, in certain amphi- 

 bious animals, 165. 



Heat, influence of colour on, 208. 



, on the repulsive power of, 294. 



, on the solar rays that occasion, 



457. 



Heat-governor, or thermostat, 67. 

 Helm wind, on the, 459. 

 Henderson (T.) on the comet of Encke, 

 197. 



Henry (Dr. W.), notice of the late, 

 439. 



Henry (Dr. W. C.) on the relations of 

 nerve and muscle, 64. 



Hereditary instinctive propensities of 

 animals, 476. 



Herschel (Sir J.), observations of ne- 

 bulas and clusters of stars, 213. 



, report on Barlow's fluid-lens te- 

 lescope, 245. 



, the Royal medal awarded to, 



222, 223, 443. 



High-water, empirical laws of the time 



