Vol. 41* Philosoplilcal Magazine. January 1813# 



Contents of Number 177. 



Pag $ 



I. An Attempt to determine the definite and simple Pro- 

 portions, in which the constituent Parts of unorganic Sub- 

 stances are united with each other. , By Jacob Bf.rzelius, 

 Professor of Medicine and Pharmacy, and M. R. A. Stock- 

 holm - - - -, -,. 



II. Derivation of one of the Equations in Laplace's 

 " Mccanique Celeste." ...... 



III. Description of a Mercurial Voltaic Conductor. By 

 W. H. Pepys, Esq. F. R. S 15 



IV. On the Di£Ference between the Hydro-carbonated 

 Gases extricated from Mineral and Animal Substances re- 



[spectively - - - - - - - -16 



V. Comparative Analysis of the Urine of rarious Ani 

 mals. By M. VAtjQUELtN -.-,.. 17 



VI. Observations on tlie Measurement of three Degrees 

 ^{^1 of the Meridian, conducted in England by Lieutenant-Col. 



William MuDGE. ByDon Josmph Rodriguez. Com- 

 municited by Joseph diMekdoza Rios, Es(j. F. R. S. - 



VII. Oh the Differential Thermometer ... 



VIII. Dissertation on the Paintings of the middle Age, 

 and those called Gothic, Extracted from an unpublished 

 Work on Painting, by M. Paillot de Montabert - 35 , 



IX. On the T«eth of Fishes, and Shells found in tlie Vi- 

 \^i cinity of Reading. By D. Plendeslleath, M. D., Reading M 



X. Notices respecting New Books - - - - 46 



XI. Proceedings of Learned Societiea - - .50 



e,f^;ii XII. Intelligence and Miscellaneous Articles. — Meteoro- 

 'hogic;U Tables, «J. 72— SQj 



.^j5^ * J* -Communications for this Work, addressed to the Editor, | 

 M Pickett-Place, Temple Bar, will meet with every attention. 



Ec. TAYtSR AN« CQ. P&WTBRS, SHOE LAME, ri.SET STREET, tONOC^. 



