CONTENTS OF N« b8.—New Series. 



XXXII. Researches on some of the Revolutions which have taken 

 place on the Surface of the Globe ; presenting various Examples of 

 the Coincidence between the Elevation of Beds in certain Systems 

 of Mountains, and the sudden Changes which have produced the 

 Lines of Demarcation observable in certain Stages of the Sedimen- 

 tary Deposits. By L. Elie de Beaumont page 241 



XXXIII. On an undescribed Bird of the Family FalconidcE. By 

 John Blackwall, Esq. F.L.S 264 



XXXIV. On Monticellite, a new Species of Mineral ; on the Cha- 

 racters of Zoizite ; and on Cupreous Sulphate of Lead. By H.J. 

 Brooke, Esq. F.R., L., & G.S 265 



XXXV. On a New Register-Pyrometer, for Measuring the Ex- 

 pansions of Solids, and determining the higher Degrees of Tempera- 

 ture upon the common Thermometric Scale. By J. Frederic 

 Daniell, Esq. F.R.S. ( To be continued) 268 



XXXVI. On the Calculation of the Orbits of Double Stars. By 

 Professor Encke ( To be continued) 279 



XXXVII. New Method of Levelling the Axis of a Transit Instru- 

 ment. By J. Nixon, Esq 284 



XXXVIII. Notices respecting New Books: — Young's Elementary 

 Treatise on the Differential Calculus 287 



XXXIX. Proceedings of Learned Societies : — Royal Society ; 

 Zoological Society 293-313 



XL. Intelligence and Miscellaneous Articles:— Red Colouring 

 Matter produced by the Action of Nitric Acid upon Alcohol, &c. 

 by M. Rouchas; Perchloric Acid j Red Solutions of Manganese; 

 Powerful Electro-Magnet ; Marking-Ink for Linen ; Monthly Ame- 

 rican Journal of Geology and Natural Science ; Mr. Harvey's Re- 

 searches on Naval Architecture ; List of Patents ; Occultations of 

 Planets and Fixed Stars by the Moon in October 1831 ; Meteoro- 

 logical Observations for August 1831 ; Table, &c 313-320 



It is requested that all Communications for this Work may be addressed, 

 post paid, to the Care of Mr. R. Taylor, Printing Office, Red Lion Court, 

 Fleet Street, London ; where complete Sets of the Old Series of the Phi- 

 losophical Magazine may be had at half of the original price. 



