11 



Proceedings of the Academy of Natural Sciences of Philadelphia. 

 Nos. 26, 27, 28, 29. 1843. 8yo.— From the Academy. 



Journal of the Franklin Institute of the State of Pennsylvania. 3d 

 Series. Vol. VI. Sept. 1843. Svo. — Frojn Dr. Patterson. 



The Medical News and Library. Vol. I. Sept., 1843. No. 6. 

 Svo. — From Lea Sf Blancliard. 



An Essay on Calcareous Manures. Third Edition. By Edmund 

 Ruffin. Petersburg, Va., 1842. 8vo. — From the Author. 



Description of Twelve New Species of Uniones. By Isaac Lea. 

 Read before the American Philosophical Society, August 18, 

 1843. A printed Sheet, dated August 19, 18^^.— From the 

 Author. 



Supplement aux Vindicise Sinicse, ou Derniere Reponse a M. Stan. 

 Julien. Par G. Pauthier. — From the Author. 



On the Abuse of the Pardoning Power. By Samuel R. Wood. Phi- 

 ladelphia, 1839. Pamphlet. 8vo. — From Dr. P. Tidyman. 



The President announced the decease of Mr. J. N. Nicollet, 

 a member of the Society, who died on the 11th Sept. 1843, at 

 W^ashington: — and thereupon Dr. Ducatel of Baltimore, was 

 appointed to prepare a notice of his life and scientific labours. 



Dr. B. H. Coates called the attention of the members to the 

 head bones of a fish found upon Squam Beach, N. J., called by 

 the fishermen, the Head-fish. 



Professor Bache stated, that he had continued during the past 

 summer the series of observations for magnetic dip and inten- 

 sity, a notice of which he had formerly submitted to the Society. 



The places of observation were Troy, Schenectady, Utica, Syra- 

 cuse, Geneva, Rochester, Niagara Falls, Oswego and Ogdensburg, in 

 New York State, and Toronto, Montreal and Quebec, in Canada. 

 The same instruments were used as formerly, namely, a Robinson 

 dipping circle with common and Lloyd needles for the usual observa- 

 tions of the dip, and for those of dip and intensity by the statical me- 

 thod of Prof. Lloyd, and a vacuum apparatus for horizontal intensity 

 by the method of vibrations. Similar observations were made at Phi- 

 ladelphia before and after the journey, to connect these results with 

 others previously obtained. Prof. Bache had the pleasure and ad- 

 vantage of the aid of Prof. Foster of Union College, in making these 

 observations. The results of the Pennsylvania survey are connected 

 directly with that now executing in the British Provinces, by the ob- 



