Vol. 66". Pliilosopliicul Magazine. Oct. 1825. 



Contents 0J?KtJMi3ER 330. 



XXXIII. On tlje Consdtvi^n^of.tKe Atmosphere. By J, Ivort, 

 Esq. M.A. F.R.S ^.^.y.:.C,.^' '•'■•" "•' *-*V. Page 21-1 



XXXIV. Remarks oiv die Method proposed 6';^ Mr. Burns for 

 finding the Latitude by.Ti>euble Altitudes. By E' fi^CcLE, Esq. .. 250 



XXXV. Obseryatmhs on the Tests for Arsenic." *^^ Aug. Ludw. 

 Gxsi-KE , : .'.v:-. '•>••*. T.'. "fi-'r-': : 252|' 



XXX¥L' Omtho Construction of Sundials ^'ivfth a Table for that 

 purpose. , JBy -Mr. 'M. Sjv^itii ,-.:-, 2,59 



XXXVII. Errors in PiAzzi's Catalogue of Stars 261 



XXXVIII. On Tungsten. By F. V^ohler. . 263 



XXXIX. On the Existence of Iodine in Minerals. By M. Vau- 

 QUELIN 269 



XL. A Method of Measuring an inaccessible Line : with Observa- 

 tions on Mr. Newton's Cros.s for Surveying 272 



XLI. FurtherThoughts on Mr. Herapath's Demonstration. By 

 T, S. Davies, Esq 273 



XLII. Correction in Dr. Ure's Paper on the latent Heat of Va- 

 pours. By T. Tredoold, Esq 277 



XLIII. Memoir on the Urao (Carbonate of Soda). By Messrs. 

 Mariano de Rivero and J. B. Boussingault, ...... ,> . .►, ,-, . . . 278 



XLIV. Decas quinta novanim Plantarum Succulentarum. By 

 A. H!,,PvV WORTH, Esq. F.L.S. &c. &c. . . '. ' 279 



XLV. On Mr. Burns's Method of finding the Latitude by Double. 

 Altitudes. By Thomas Henderson, Esq 283 



XLVI. Examination of the Piatina found in Russia. By M^Lau- , 

 gier 285 



XLVII. Analysis of an Urinary Calculus from a Hog. By M. 

 Wurzer, of Marburg 288 



XLVIIl. On the Solution of various Kinds of Steel and Iron in 

 Acids ; and on the Nature of the Residuums left by them. By M.^ 

 Karsten 290 



XLIX. Extract from a Letter addressed by Professor Bessel to 

 Professor Schumacher, relating to the Greenwich Observations, as 

 criticized by a writer in the Philosophical Magazine forNovember asstl. 



Deicembfr ^m.,., , , . ., . ,.,. .;.'".! .'29? 



: L. iSIotices respepting New-Books. diluvian Phy- 

 tology ; Icones Fossilium Scctiles 296 — 304 



LI. Proceedings of the Royal Academy of Sciences of Paris. . . . 304 



LII. Intclligence.and Misce,ll^neous Articles: — Astronomical In- 

 formation :.Dr. Burncy on the New Comets, and on the late Conjunc- 

 tions of tI\o J^Jjinets; NortliieFn Expedition — Captain Parry's Return ; 

 Africa — Niger-^Fernando Po ; Length of the Seconds Pendulum in . 

 various Parts of the Earth, as determined by Capt. Sabine; Mr.Bevan's-- 

 Suggestions respecting the Formation of the present Crust of tjig, 

 Earth ; Mr. Farey on Hazel Nuts found in Peat Bogs ; Mr. H^tvey 

 on the Fogs of the Polar Seas; Selenium; Migration of Birds; Steam- .^ 

 Boats on the Rhine; List of New Patents; Meteorological '^able307 — 3^ 



rj'f 



■%* (loiiimuniccitions for this Work, post-paid, addi-essed to the Editop,*' 

 38 Shoe-Lane, will meet with every attention. 



lilCUAHV 1A^I(>'! "IM.NXEK., SHOE-J.ANK, JLOVDON- 



