CONTENTS. 



Page 

 Art. I. Biographical Memoirs of M. Halle' and M. CoRvi- 



SART. By Baron Cuvier, - - 1 



II. Notice regarding the Salt Lake Inder, in Asiatic Rus- 

 sia. Communicated by Lieutenant J. E. Alexan- 

 der, 16th Lancers, K. L. S. M. R. A. S. Corres. 

 Mem. S.A.E. &c. - - - 18 



III. On the Discovery of a new Species of Pterodactyle, and 

 of Fossil Ink and Pens, in the Lias at Lyme Regis ; 

 also of Coprolites or Fossil Faeces in the Lias at 

 Lyme Regis, and Westbury-on-Severn, and else- 

 where, in formations of all ages, from the Carboni- 

 ferous Limestone to the Diluvium. By the Rev. 

 W. Buckland, D.D. F. R.S. F. L. S. F. G. S. and 

 Professor of Geology and Mineralogy in the Univer- 

 sity of Oxford, - - - - 21 

 IV. On the Chemical Constitution aud Temperature of 

 Springs, in reference to the Rock Foi'mations in their 

 Vicinity. By Dr and Prof. Gustavus Bischoff, 26 

 V. Examination of some Minerals. By M. Victor 



Hartwall, _ . ._ - 38 



VI. Analysis of Pyrophyllite, a new Mineral. By M. R. 



Herman of Moscow, - - - 40 



VII. Additional Remarks on Active Molecules. By Ro- 

 bert Brown, F. R. S. &c. - - 41 

 VIII. On the Tripang, or Bicho de Mar, or Sea-Slug of In- 

 dia, the Holothuria tubulosa of naturalists. By 

 Charles Collier, formerly Staff-Surgeon in Cey- 

 lon, now Inspector of Hospitals in the Mauritius. 

 Communicated by Sir. James M'^Grigor. With a 

 Plate, - -' - - - ■ 46 

 IX. Observations on the ancient Roads of the Peruvians. 



By John Gillies, M. D. M."W. S. - 53 



X. On the Stomach of the Manis pentadaciyla of Cey- 

 lon. By C. T. Whitefield, Esq. Assistant- 

 Surgeon, Royal Artillery. Communicated by Sir 

 James MoGrigor. With a Plate, - ii^ 





