NATURAL SCIENCES OF PHILADELPHIA. 
821 
1901.] 
Owens College. Manchester. 
Museum Handbooks. 
Notes from the Manchester Museum. 
Report of the Manchester Museum. 
Studies in Biology from the Biological Departments. 
Paedologisch Jaarboek. Antwerp. 
*Palaeontographica, Beitrage zur Naturgeschichte der Yorzeit. 
*Palgeontographica Italica. 
*Palaeontographical Society. London. 
[Publications.] 
Peabody Institute. Baltimore. 
Annual Report. 
Peabody Museum of American Archaeology and Ethnology. Cambridge. 
Annual Reports. 
Archaeological and Ethnological Papers. 
Memoirs. 
Pennsylvania Department of Agriculture. Harrisburg. 
Annual Report. 
Bulletin. 
Report of Division of Forestry. 
Pennsylvania State Board of Health. Harrisburg. 
Annual Report. 
Pennsylvania State College. State College. 
Report. 
Pennsylvania Commissioners of Fisheries of the State of Pennsylvania. 
Harrisburg. 
Report. 
Pennsylvania Forestry Association. Philadelphia. 
Forest Leaves. 
Pennsylvania Hospital. Philadelphia. 
Report of the Board of Managers to the Contributors. 
Pennsylvania Library Club. Philadelphia. 
Occasional Papers. 
Perthshire Society of Natural Science. Perth. 
Proceedings. 
Philadelphia City Institute. Philadelphia. 
Annual Report. 
Philadelphia College of Pharmacy. Philadelphia. 
Alumni (The) Report. 
Philadelphia (The) Museums. Philadelphia. 
Scientific Bulletin. 
Philadelphia Mycological Center. Philadelphia. 
Bulletin. 
Philosophical Society. Glasgow. 
Proceedings. 
Philosophical Society of Washington. Washington. 
Bulletin. 
R. Physical Society. Edinburgh. 
Proceedings. 
