487 



Gregory (Dr W.) on the composition of 

 tiie Ranrjoon petroleum, with re- 

 marks on th» composition of petro- 

 leum and naphtha in general, 77. 



Notice of a new com- 

 pound of sulphur, 10(j. 



Gurnard, British, observations on a new 

 species of, 157. 



Guthrie (Mr). Notice respecting anew 

 rellecting microscope, lo5. 



Hamilton i Robert). Observations on 

 the seal fur of commerce, 200. 



Hanstecn (Professor). Letter on ter- 

 restrial magnetism, 388. 



Harris (William Snow) on the investi- 

 gation of magnetic intensity by the 

 oscillations of a horizontal needle, 39. 



Heart, on the pulsation of the, 148. 



Heat, on the refraction and polariza- 

 tion of, 82. 



verbal communication on the cir- 

 cular polarization of, 113. 



memorandum respecting the po- 

 larization of, 130. 



researches on. By Professor For- 

 bes. Second series, 144. 



researches on. Third series, 207. 



different kinds of, susceptible of 



polarization, 192. 



and Light, on the intensity of, 



254. 



on the polarizability of, 334. 



radiant, on the effect of the me- 

 chanical texture of screens on the im- 

 mediate transmission of, 281. 



Results on the specific heat of 



certain rocks, 373. 



Heights, determination of, by the tem- 

 perature of boiling water, 412. 



Hemlock, on the poisonous properties 

 of, 102 



Hemlock-water, observations on, 439. 



Herring, on the food of the, 170. 



Hibbert(Dr). Communication relative 

 to the fresh water limestone of Bur- 

 diehouse, near Edinburgh, belonging 

 to the carboniferous group of rocks, 

 33. 



Additional notice relative to 



the fresh water limestone in the vi- 

 cinity of Edinburgh, belonging to the 

 carboniferous group of rocks, 50. 



on the fossil fishes of the lime- 

 stone of Burdiehouse, 72. 



Notice of further discoveries 



at Burdiehouse, 38. 



Short notice relative to the 



position of the limestone at Burdie- 

 house, and the relation it bears to the 

 mountain limestone of Muirhouse, 42. 



Summary of the discoveries 



hitherto made in the ossiferous beds 

 of the basins of the Forth and Clyde, 

 61. riile Dr Hibbert Ware. 



Horner (Leonard) on the occurrence of 

 Megalichthvs Hibberti, 112. 



Hope iDr T. (J.). Address on the Keith 

 Prize being presented to Professor 

 Forbes, 114. 



HopeiDr T. C.)- Observations on the 

 coloured matters in plants, 12G. 



Observations on the chemical 



nomenclature of inorganic com- 

 pounds, 139. 



Inquiry whether sea water 



has its maximum density at some 

 degrees above its freezing point, after 

 the manner of fresh water, 203. 



Chemical observations on the 



flowers of the Camellia japonica, 

 Magnolia granditlora, and Chrysan- 

 themum leucanthemum, and on three 

 proximate principles which they con- 

 tain. Part i., 403; Part ii., 419. 



An attempt to explain the 



phenomena of the freezing cavern at 

 Orenburg, 429. 



Horse, observations on the structure of 

 the foot of the, 15. 



Hume (David). Report of a committee 

 on bis manuscripts, bequeathed to the 

 Royal Society by the late Baron 

 Hume, 338. 



Human races in Britain, on the, enume- 

 rated by Tacitus, Part i., 459 ; Part ii., 

 471. ■ 



Hydrodynameter, description of, 206. 



Hydrod3namical phenomena, ex;:eri- 

 raental researches into the laws of 

 certain, 161. 



Hydrodynamics, observations on, 238. 



Ink, on the composition of a new, 189. 

 Iron, on the application of hot air in the 



manufacture of cast, 91. 

 on the Persian mode of making 



malleable, 293. 

 slags, on the composition of some, 



26. 

 Irvine (W. J.). Experiments and ob- 

 servations on the arterialization of the 



blood, 20. 

 Isomorphism, on the examination of 



certain objections to the theory of, 



186. 



James' fever powder, notice regarding 

 the composition of, 183. 



Johnston (J. F. W.) on the super-sul- 

 phuretted lead of Dufton, 7. 



on the gradual elevation of 



land in high northern latitudes, 12. 



on the composition of some 



iron slags, 26. 



on paracyanogen and its com- 

 pounds, 131. 



on the constitution of the 



earth's atmosphere in remote geolo- 

 gical epochs, 163. 



Notice on the composition of 



the right prismatic baryto-calcite, 

 167. 



Jones (Thomas Wharton), Notice re- 

 lative to the pigmentum nigrum of 

 the ej-e, 24. 



Juices resembling gamboge, notices re- 

 garding, 151. 



Juvinas, a brief notice of the aerolite 

 seen to fall at, 292. 



