TO CORRESPONDENTS. 



Communications have been received from W. Thompson, Esq., P. C. Eyton, 

 Esq., Dr. ParnelLj and J. E. Gray, Esq., F.R.S. W. II. White's Paper was re- 

 ceived too late for insertion in the Number for this month, and will find its place 



in our next. 



BOOKS RECEIVED. 



Part I. of the Zoology of the Voyage of H.M.S. Beagle ; Fossil Mammalia. By 



Richard Owen, Esq., F.R.S. 



Part I. A History of British Reptiles. By Thomas Bell, Esq., F.R.S. 



ERRATA in No. I. 



Page 5G, line 20, for Luyon, read Luzon. 



— 62, 6 lines from bottom, for Mutisa, read Mutisia. 



— 63, first line, for Cartilleja, read Castilleja. 



— 74, line 18, for Coregonus Maramula, Jard., read Coregonus Willoughbigii, 



Jard. 



— 75, line 7, for Dr. Pownell, read Dr. Parnell. 



THE LONDON AND EDINBURGH 

 PHILOSOPHICAL MAGAZINE, AND JOURNAL OF SCIENCE, 



CONDUCTED by 



SIR DAVID BREWSTER, F.R.S., RICHARD TAYLOR, F.L.S., 



AND RICHARD PHILLIPS, F.R.S. 



FOR APRIL, 1838. 



CONTENTS : 



1 . On the Action of Nitric Acid upon Bismuth and other Metals. By Prof. T. 

 Andrews, M.D. 



2. Further Experiments on the Current Electricity excited by Chemical Ten- 

 dencies. By Prof. Schcenbein of Bale. 



3. Notes on Repulsion by Heat, &c. By the Rev. Prof. Baden Powell. 



4. On the Nature and Properties of the Teriodide of Chromium. By Mr. H. 

 Giraud. 



5. On the Relation between the number of Faces, Edges, and Corners in a solid 

 Polyhedron. By Prof. A. De Morgan. 



6. On the received Equivalents of Potash, Soda, and Silver. By Prof. J. F. W. 

 Johnston. 



7. On the Path of the projectile Weapon of the native Australians, called the 

 " Boomarang," or "Kylee." By a Correspondent. 



8. Method of finding the Equation to Fresnel's Wave-surface. By A. Smith, Esq. 



9. Description of two Calculi composed of Cystic Oxide. By Thomas Taylor, 

 M.R.C.S. 



10. On the composition of certain Mineral Substances of Organic origin. By 

 Prof. J. F. W. Johnston. 



11. Researches upon the Products of the Decomposition of Cyanogen in Water. 

 By MM. Pelouze and Richardson. 



12. Notes to Analytical Development, &c. By Prof. J. J. Sylvester. 



13. On the occurrence of the form ^ in passing from general to particular values 

 of certain Algebraic Functions. By G. B. Jerrard, Esq. 



Proceedings of Learned Societies: — Royal Society. — Royal Irish Academy. 



Reviews : — On the practical Application of the Quadrature of the Circle in the 

 configuration of the Great Pyramids of Gizeh. By H. C. Agnew, Esq. 



Miscellaneous : — Improvements in Magnetical Apparatus. — On the Constitution 

 of some Organic Acids ; by MM. Dumas and Liebig. — Meteorological Observations 

 and Tables, &c. 



R. and J. E. Taylor, Red Lion Court, Fleet Street. 



