114 



Comptes Rendus Hebdomadaires des Seances de V Academie 

 des Sciences. Premiere Semestre, 1840. Nos. 20 — 26; 

 Deuxieme Semestre, 1840. Nos. 1 — 26; Premiere Semestre, 

 1841, Nos. 1 — 10. Presented by the Academy. 



Catalogue des Manuscrits de la Bibliotheque de Chartres. 

 Presented by J. O. Halliwell, Esq., M.R. I. A. 



Greenwich Astronomical Observations for the Year 1839* 

 Presented by the Royal Astronomical Society. 



Report of the Tenth Meeting of the British Association for 

 the Advancement of Science. 1840. Presented by the As- 

 sociation. 



Transactions of the American Philosophical Society. Vol. 

 VII. New series. Part 2. 



Proceedings of the American Philosophical Society. 

 Nos. 14—16. (1841). Presented by the Society. 



On the Composition of Chalk Rocks and Chalk Marl by 

 invisible organic Bodies ; with an Appendix. By Thomas 

 Weaver, Esq., M.R.I.A. Presented by the Author. 



