490 



Parnell (R.) on a new species of British the rivers Teviot, Clyde, and Nith, 



gi-ass of the genus Holcus, and obser- 252. 



vations on some of the more closely Roads. Parallel roads of Lochaber, 3i8. 



allied species of grasses found in the Roberts (Martynj on a new galvanic 



neighbourhood of Edinburgh, 367. battery, and an improved voltameter, 



Paterson (John) on an arrangement of 2^18. 



the planets and satellites, 151. Respecting the relative vol- 

 Patrick (J. Shedden) on the fossil vege- taic agency of circuits of copper and 



tables of the sandstone of Ayrshire, zinc, and zinc and iron, 261. 



448. Robertson (James) on the Persian mode 



Pendant, Gothic, on the mathematical of making malleable iron direct from 



form of. 111. the ore, iS3. 



Pendulums, researches on the vibra- Rocks. General view of the phenomena 



tions of, in fluid mediums, 36. displayed in the neighbourhood of 



Periosteum, on the power of, to form Edinburgh by the igneous rocks, in 



new bone, 153. their relations with the secondary 



Petroleum rangoon, on the composition strata, 35. 



of the, with remarks on the composi- Rorqual, observations on the anatomy 



tion of petroleum and naphtha in ge- of the, 14. 



neral, 77. account of the dissection of a 



Phosphuretted hydrogen gas, on, 70. young, 63. 



Pillans (Prof. J.) on the origin of the Russell i J. S.). Notice of experimental 



adjective, 135. researches into the laws of hydrod^- 



Placenta, anatom}- of the human, 407. namical phenomena, 161. 



Plague, on the prevention of, 372. on the terrestrial mechanism of 



on the, — whether or not it is a the tides, 179. 



contagious disease, 380. Notice of the remarkable ma- 

 Planets and satellites, on an arrange- thematical properties of a certain pa- 



ment of, 151. rallelogram, 187. 



Plants, observations on the coloured Keith Prize awarded to. for his 



matters in, 123. researches on hydronamics, 199. 

 notice regarding the growth of, on a new method in conic see- 

 in closed glazed cases, 299. tions, 217. 

 on the cellular fibre and in- on the law which connects the 



crusting matter of, 454. elastic force of vapour with its tem- 



Ponton (Mungo) on a new species of ])erature, 227. 



coloured fringes developed between Regarding some points in hy- 



certain pieces of plate-glass, exhibit- drodynamics that have been misun- 



ing a new variety of polarization, 31. dcrstood. 1:38. 

 on the condition of the earth as Notice of some observations 



described by Moses, 159. made during the storm of January 



Proteus anguinus, remarks on the phy- 1839, 246. 



siology of the, 170. Researches in hydrodynamics. 



Pyroxylic spirit, on the action of voltaic Second memoir. On waves, -133. 



electricity on, 1-56. on certain laws of the resistance 



of fluids, 451. 



Rain-gauges, results obtained with, 329 on the tides of the Firth of 



results obtained from the Forth, and the east coasts of Scotland, 



different forms of, 350. 453. 

 Ranken ( Mr John ) on observations made 



with Whewell's new anemometer, St Bernard. Grand, on the geographical 



231. position of the convent of, 4. 



Regions, Arctic, on the force of solar Salmon, on the natural history of the, 7. 



radiation in the, 322. on the food of the, 170. 



Regnault iM.i. Results of experiments experiments on the growth of 



on the specific heat of certain rocks, the fry of, 176. 



373. observations on the parr and 



Reid (Dr D. B.). Experiments on the young of the, 187. 



heating power of the radiant caloric development and growth of. 



fruni the lime-ball light of Mr Drum- 275. 



mend, 55. on the gr.iwth of the, 398. 



Practical researches on respii-a- Sang (Edward). Description of a single 



tion, 199. achromatic eye-glass, 161. 



Respiration, practical researches on. Sculpture, on tiie origin and progress of 



199. Grecian, Part i.. 301. 



Richardson (Dr) on the force of solar Sea, on the luminousness of the. 4-16. 



radiation in the Arctic Regions, 322 on a remarkable oscillation of the. 



Rigi, account of some optical pheno- observed at various places on the 



mena observed upon the, 10. coa-ts of Great Britain, in July 1843. 



Rivers. Observations on the drving of 457. 



