<>' 



C O N T E N T S 



Fagc 



On Mineral and Metallic Veins, (wj7A a Ptoe) - - - - 481 



On the Modus Operandi of Phosphorus on the Living System, - - 490 



Observations on the Anatomy of the Sloth, .... 499 



Ancient Vitrified Beacon Stations,/ ..-.-.- 506 



Rafinesque's Atlantic Journal, - - 508 



Account of Operations to find AVater in the Desert between Cairo and 



Suez, 516 



Abstract of Proceedings of the Geological Society of P^nnsyivania - 517 



Mr. Browne on the Rocks found in the vicinity of Philadelphia, - 517 

 On the Geology of Bradford County, Pcnns} Ivania, by a Committee of 



the Cabinet of Science of that County, 519 



On the Geology of Wajnie County, Pa. by Jacob P. Davis, Esq. - 520 



Meteorological Observations at AVilmington, Delaware, ... 524 



Tyrian Purple Dye, 525 



Mode in which the Common Frog takes its I' ood, - - - 525 



Bi-valve Mouse Traps, 526 



Second Edition of Delabeche's Geological Manual, ... 527 

 On the Means by which certain Animals ascend the Vertical Surfaces of 



highly polished Bodies, -..-...- 527 



Services rendered to Natural History by E. AV. A. Dnimmond, Esq. 527 



Fetrefacta iVlusei Bonensis, by Goldfuss, - 527 



Birds of Europe, by Mr. Gould, 527 



Dr. Turton's Manual of the Land and'Frcsh-water Shells of the British 



Islands, with coloured Plates of every species, .... 528 



The Tail of the Caterpillar becomes the Head wf the Butterfly, - 528 



Discovery of a Reef in the Pacific, 528 



Entered according to the Act of Congress, in the year one thousand eight 

 hundred and thirty-two, by G. W. Fcatherstonhaugh, in the Clerk's Office 

 of the District Court of the United States, in and for the Eastern District of 

 Pennsylvania. 



