141 



The Medical News and Library. Vol. XIII. No. 153. Sept. 1855. 

 Philadelphia. 8vo. — From Messrs. Blanchard <^ Lea. 



Astronomical Journal. Vol. IV. Nos. 14, 15. Sept. 5, 19, 1855. 

 Cambridge. 4tG. — From the Editor. 



Official Army Register, corrected, to August 1, 1855. Washington, 

 bvo. 



Rifle and Light Infantry Tactics; for the Exercise and Manceuvres 

 of Troops when acting as Light Infantry or Riflemen: prepared 

 under the direction of the War Departmciit, by Brevet Lt. Col. 

 W. J. Hardee, U. S. Army. 2 vols. Philadelphia. 12mo. — From 

 Major Hartmati Bache. 



On the Resolution of Numerical Equations. By A. Vallas, Art. and 

 Philos. Doct. &c. ^Q\w York, 1855. 8vo. — Donor vnknovm. 



Description of a New Mollusk from the Red Sandstone near Pottsville, 

 Pennsylvania. By Isaac Lea. (Proc. Acad. Nat. Sci. May, 1855.) 

 8vo. — From the Author. 



Remarks on the Penal System of Pennsylvania, particularly with re- 

 ference to County Prisons. By William Parker Fouike, of Phila- 

 delphia. Philadelphia, 1855. 8vo. — From J. J. Barclay, Esq. 



Prize Essays on Juvenile Delinquency. Published under the direction 

 of the Board of Managers of the House of Refuge. Philadelphia, 

 1855. 8vo. — Frotn the same. 



Historical Sketches of the Formation and Founders of the Philadel- 

 phia Hose Company: being the first Hose Company instituted in 

 the City of Philadelphia, Dec. 15, 1803 :— with a list of the Mem- 

 bers. Philadelphia, 1854. 8vo. — From Richard Vavx, Esq. 



The Florist and Horticultural Journal. Vol. IV. No. 6, 7. Philadel- 

 phia, 1855. 8vo. — From the Editor. 



Dr. Franklin Bache announced the decease of Col. C. C. 

 Biddle, a member of the Society, who died August 20, 1S55, 

 in the 70lh year of his age: — Whereupon, Mr. Ord was, on 

 motion, requested to prepare an obituary notice of the deceased 

 member. 



Mr. Du Bois laid upon the table specimens of the metal alu- 

 minum, accompanied by the following communication. 



Messrs. Eckfeldt and Du Bois, Assayers of the Mint, offer for the 

 examination of the Society, two specimens of " the new French sil- 

 ver," or aluminum; one of which is in lump, and the other rolled 



