CONTENTS OF N° 60.— -New Series. 



LI. On Isomorphism. In Reply to Mr. Brooke. [With a Note 

 on Mr. Prideaux's remarks on Chemical Notation.] By Professor 

 Whewell, of Cambridge page 401 



LII. Unequal Refrangibility of Lighten the Undulatory Theory, 



By A CORKESPONDENT "I-IS 



LIIL On the Symmetrical Functions of a specified Number of 

 the Roots of an Equation. By the Rev.R. Murfhy, Fellow of Caius 

 Coll. and of the Cambridge Philosophical Society 413 



LIV. A Description of New Succulent Plants of the Natural 

 Orders Bromeliacece^ Tulipacece, Crassulacea, Euphorbiacece, CactecB, 

 Ficoidece. By A. H, Ha worth, Esq. F.L.S. &c 414 



LV. Additional Remarks on Isomorphism. By H. J. Brooke, Esq. 

 F.R.S.L.S. & G.S 424 



LVI. Notices respecting New Books: — Dr. Paris's Life of Sir 

 Humphry Davy, Bart. ; Mr. Rennie's Edition of Montagu's Orni- 

 thological Dictionary ( To be continued) 426-433 



LVII. Proceedings of Learned Societies : — Geological Society ; 

 Linuaean Society ; Astronomical Society ; Zoological Society. . 433-465 



LVIII. Intelligence and Miscellaneous Articles : — On Mudarine; 

 Preparation of Oxichlorate of Potash, by M. SeruUas ; Separation 

 of Antimony and Tin; Dr. Gregory on White's Ephemeris; On 

 Vanadium, by Mr. Johnstone ; List of New Patents ; Occultations of 

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

 logical Observations for October 1831 ; Table, &c 465-472 



*^* 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- 

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