Messico 
Messico — Sociedad cientifica « Antonio Alzate » (Memorias y 
Revista). 
La Naturaleza. — Periodico cientifico de la Sociedad 
mexicana de Historia natural. 
Institùto geològico (Boletin). 
Stati Uniti 
Boston — Society of Natural history (Proceedings). 
Chapell Hill Elisha Mitchel scientific Society (Journal). 
Chicago — Academy of Sciences (Bulletin and Annual report). 
Madison (Wisconsin)— Academy of Sciences, Arts and Lettres (Tran- 
sactiones). 
Wisconsin geological and natural History Survey (Bul- 
letin). 
Meriden (Connecticut) — Meriden scientific Association (Transaction). 
Minneapolis (Minnesota) — Minnesota botanical studies (Bulletin). 
The Geological and natural History Survey of Min- 
nesota Zoological series. — Reports of the Survey 
Botanical Series. 
Missoula (Montana) — Bulletin ot the University of Montana | Biological 
and Geological Series]. 
Philadelphia Academy of Natural Sciences (Proceedings). 
Saint-Louis — Academy of Science (Transactions). 
Missouri botanical garden (Annual report). 
Tufts College (Massachussets) — Studies. 
Washington — United States Geological Survey (Annual report). 
U. S. Department of Agriculture. — Division of Or- 
nithology and Mammalogy (Bulletin. North Ame- 
rican Fauna). 
Smithsonian Institution (Annual report). 
U. S. Department of agriculture (.Jearbook). 
U. S. Department of agriculture. — Bureau of ani- 
mal industry (Annual reports). 
Canadà 
Halifax — Nova Scotian Institute of science. 
