362 



Durkee exhibited, under the Microscope, beautifully pre- 

 pared specimens of this muscular tissue, together with other 

 forms of the same tissue. Similar specimens were exhibited 

 by Dr. Burnett. Both gentlemen displayed in the most 

 perfect manner the ultimate fibrilla by itself. 



A number of valuable fossils and minerals from Europe 

 were presented in the name of Rev. Chandler Robbins ; 

 and a collection of dried plants from an unknown donor. 



The thanks of the Society were voted for the donations. 



BOOKS RECEIVED DURING SIX MONTHS ENDING SEPTEMBER 30, 1853. 



Proceedings of the Academy of Natural Sciences of Philadel- 

 phia. Vol. VI. No. 7. pp. 223 — 302. From the Academy of 

 Natural Sciences. 



Annals of Science. No. 11. 8vo. Pamph. Cleveland, Ohio, 

 1853. Received in Exchange. 



Memoir of Robert Troupe Paine. By his Parents. 4to. New 

 York, 1852. From Dr. M. Paine. 



Discourse on the Soul and Instinct. By Martyn Paine, M. D. 

 12mo. New York, 1849. From the Author. 



Medical and Physiological Commentaries. By Martyn Paine, 

 M. D. 3 vols. 8vo. New York. 1840-44. From the Author. 



Theory of Chemical Changes, and on equivalent volumes. By 

 T. S. Hunt. 8vo. Pamph. New Haven, 1853. From the 

 Author. 



Catalogue of North American Reptiles in the Museum of the 

 Smithsonian Institution. Part 1. Serpents. By S. F. Baird and C. 

 Girard. 8vo. Pamph. Washington, 1853. From the Smith- 

 sonian Institution. 



Annals of Science. Conducted by H. L. Smith, A. M. No. 

 10. 8vo. Pamph. Cleveland, 1853. Received in Exchange. 



Memoir of the Physics of the Mississippi River. By. C. H. 



