IT CONTENTS. 



Page 

 Dr. J. Reade's Experiments on Light and Shadow made by 



means of the Prism 65 



Occultation of Aldebaran, on October 15th, 1829, observed by 

 Dr. Burney — On the Copper-coloured Light reflected from 



the dark Part of the Moon's Disc, by Dr. Burney 66 



Law of Patent Inventions [contmued) 67 



New Patents 76 



Obituary : M. Niels Henrik Abel— M. Vauquelin 77 



Meteorological Observations 7S 



Meteorological Observations made by Mr. Booth at the Gar- 

 den of the Horticultural Society at Chiswick, near London, 

 by Mr. Giddy at Penzance, Dr. Burney at Gosport, and Mr. 

 Veall at Boston 80 



NUMBER XXXVIII.— FEBRUARY. 



Mr. De la Beche's Notes on the Geographical Distribution of 

 Organic Remains contained in the Oolitic Series of the Great 

 London and Paris Basin, and in the same Series of the South 



of France [continued) 81 



Mr. King Williams's Account of a new Paddle-Wheel, in which 

 the Motion is obtained by means of an eccentric fixed Crank 



and Levers 96 



Mr. Roscoe on Artificial and Natural Arrangements of Plants; 

 and particularly on the Systems of Linnaeus and Jussieu 



(continued) 97 



Reply to Caleb Mainspring's Observations on Prize Chrono- 

 meters 104< 



Mr. Haworth's Description of New Succulent Plants of the 



Natural Order of Cactece 106 



Sketch of the Systema Glossatorum of Fabricius, Vol. 1 . From 



Illiger's Magazin fiir Imektenkunde, vol. vi. p. 277 118 



Mr. J. W. Lubbock on the Tides in the Port of London .... 124' 

 Mr. R. Phillips on a new Salt obtained by the partial Decom- 

 position of Perchloride of Mercury 129 



Suggestion of a New Method of Trial for the Chronometers at 



Greenwich 1 34. 



New Books : — Mr. Challis on the Theory of the Small A'ibra- 



tory Motions of Elastic Fluids ] 36 



Proceedings of the Royal Society 139 



■ Geological Society 140 



Linnsean Society 146 



-■ Royal Geological Society of Cornwall . . 147 



M. Aldini's Incombustible Dress for Firemen 148 



Method of obtaining Skeletons of small Fishes 151 



Law of Patent Inventions 152 



New Patents 1 57 



Aurora Borealis — Meteorological Observations 158 



NUMBEK 



