NATURAL SCIENCES OF PHILADELPHIA. 
813 
1901.] 
Magyar tudomanyos Akademia. Budapest. 
Almanach. 
Ertekezesek a mathematikai tudomanyok Korebol. 
Ertekezesek a termeszettudomanyok Korebol. 
Mathematikai es termeszettudomanyi Ertestito. 
Mathematikai es termeszettudomanyi Kozlem6nyek, etc. 
Mathematische und naturwissenfchaftliche Berichte aus Ungarn. 
Rapport. 
Termeszetrajzi Fiizetek. 
K. k. mahrisch-schlesische Gesellschaft zur Beforderung des Ackerbaues, der 
Natur- und Landeskunde. Briinn. 
Centralblatt. 
Notizblatt. 
Malacological Society of London. London. 
* Proceedings. 
*Malpighia. Genova. 
Manchester Geological Society. Manchester. 
Transactions. 
Manchester Institute of Arts and Sciences. Manchester. 
Proceedings. 
Manchester Literary and Philosophical Society. Manchester. 
Memoirs and Proceedings. 
Manchester Microscopical Society. Manchester. 
Transactions and Annual Report. 
Marine Biological Association. London. 
* Journal. 
Marlborough College Natural History Society. Marlborough. 
Report. 
Maryland Academy of Sciences. Baltimore. 
Transactions. 
Maryland Geological Survey. Baltimore. 
[Publications.] 
Maryland State Weather Service. Baltimore. 
[Maryland State Weather Service.] 
Massachusetts Agricultural College. Hatch Experiment Station. Amherst. 
Annual Report. 
Bulletin 
Mazama. Portland. 
Medicinisch-naturwissenschaftliche Gesellschaft. Jena. 
Zeitschritt. 
Meehans’ Monthly. Philadelphia. 
*Memoires concernant l’Histoire naturelle de l'Empire chinois. 
Mercantile Library Association. New York. 
Annual Report. 
Bulletin. 
Meriden Scientific Association. Meriden. 
Transactions. 
Michigan Academy of Science. Lansing. 
Report. 
