CONTENTS. vii 



Page 



Proceedings of the Cambridge Philosophical Society 382 



Fall of the Broughton Suspension Bridge, near Manchester . . 384 



University of Cambridge 389 



Manganese in Human Blood On Sulfo-Sinapisine, originally 



termed Sulfo-Sinapic Acid 390 



Emission of Light during the Compression of Gases 391 



Action of Chloride of Bromine upon Water and ^Ether Cry- 

 stallization of Bismuth 392 



Reaction of Persalts of Iron and Carbonates Inflammation of 

 Phosphorus by Charcoal Observations on Aurora? Boreales 

 witnessed at Bedford, at various times, from April 19, 1830, 



to January 11, 1831, by W. H.White, H.M.C.S 393 



Rev. W. D. Conybeare's Preliminary Addresses to the Course 

 of Lectures on Theology, delivered at the Collegiate Insti- 

 tution of Bristol Dr. Webster's Dictionary 396 



Lunar Rainbows Lunar Occultations of Planets and fixed 

 Stars by the Moon, in May 1831. Computed for Greenwich, 

 by T. Henderson, Esq. ; and circulated by the Astrono- 

 mical Society 397 



Meteorological Observations 398 



NUMBER LIV. JUNE. 



Dr. J. Apjohn on a Combination of Bicyanide of Mercury and 



Iodide of Potassium 401 



J. E. B. on Mr. Lindley's Statement respecting the Investiga- 

 tion of the Structure of the Orchidece 403 



Prof. Encke on the Calculation of the Orbits of Double Stars 405 

 Mr. Brayley, Jun., on the Odour exhaled from certain Organic 

 Remains in the Diluvium of the Arctic Circle, as confirma- 

 tory of Dr. Buckland's Opinion of a sudden Change of Cli- 

 mate at the Period of Destruction of the Animals to which 

 they belonged; and on the Probability that one of the Fossil 

 Bones brought from Eschscholtz Bay, by Captain Beechey, 



belonged to a Species of Megatherium 411 



Dr. A. Smith's Observations relative to the Origin and History 



of the Bushmen 419 



Mr. J. Nixon's Theory of the Telescopic Level 423 



Ne w Books : Phillips's Illustrations of the Geology of Yorkshire 430 



Proceedings of the Royal Society 441 



Geological Society 445 



Zoological Society 449 



Linnaean Society 461 



at the Friday- Evening Meetings of the Royal 



Institution of Great Britain 461 



Cambridge Philosophical Society 462 



Mr. Galbraith on an Omission in his Paper on North Polar 

 Distances . . .463 



