CONTENTS. VII 



Page 



of November 1832, to the 10th of November 1833; with 



Observations, &c 336 



Dr. J. Hancock on the Cause of the Appearance commonly 

 termed Heat Lightning, and on certain correlative Pheno- 

 mena 310 



Rev. W. D. Conybeare on the probable future Extension of 



the Coal-fields at present worked in England (continued) . . 346 



Rev T. J. Hussey's Catalogue of Comets (continued) 349 



Sir David Brewster's Account of two Experiments on Acci- 

 dental Colours; with Observations on their Theory 353 



T. W.W.'s Observations on the Visibility of the Retina; with 



Remarks upon its probable Cause 3.34 



Proceedings of the Royal Society 360 



Geological Society 370 



Zoological Society 3/7 



. Linnaean Society 381 



— Royal Astronomical Society 3S1 



. Entomological Society of London ;-!S4 



Chlorocarbonic Acid — Pyrogenous Acids 385 



On Hyperiodic Acid and Hyperiodates 386 



Crystallization of Sulphuret of Lead 388 



Presence of Azote in Seeds 389 



M. Reichenbach of Blansko on Kreosote 390 



Sig. L. Sementini on Iodous Acid 392 



Ledererite not a new Mineral 393 



The late Thomas Tredgold, Civil Engineer 394 



M. Cauchy on the Undulatory Theory of Light 396 



On the Desiccation of Chloride of Silver. By Dr. Turner . . 397 



Summary of the State of the Barometer, &c, in Kendal, 1833 398 



Meteorological Observations 400 



NUMBER XXIV.— JUNK. 



Mr. T. Graham's Reply to Mr. Phillips's Additional Observa- 

 tions on Chemical Symbols , 401 



Rev. W. D.Conybeare's Inquiry how far the Theory of M. Elie 

 de Beaumont concerning the Parallelism of Lines of Eleva- 

 tion of the same Geological ./Era, is agreeable to the Phe- 

 nomena as exhibited in Great Britain (concluded) 404 



Rev. John Kenrick on the alleged Greek Traditions of the De- 

 luge 414 



Prof. Moseley in Answer to Mr. Earnshaw's Remarks on the 

 " Principle of Least Pressure,'' published in the Phil. Mag. 

 for April !' '. 



New Honks : — Conybcare's Report on the Progress, Actual 

 State, and I 'lienor Prospects of Geological Science I'Z" 7 



Proceedings of the Royal Society 436 



Geological Society 441 



