- 4 :'> — 
iÂncoln. University of Nebraska. 
.}[adison. Wisconsin iVcad. of sciences, arts and letters. 
Meriden (Connect.) Meriden scientific Association. 
Mexico. Sociedad cientifica Antonio Alzate ». 
Instituto geolôgico de Mexico. 
Milicaukee. Natural history society of Wisconsin. 
Minneapolis. Cfeological and natural history Survey of 
Minnesota. 
Minnesota Academy of natural sciences. 
New-Haven (Connect.) Connecticut Academy of arts and 
sciences. 
Office of the American Journal of science. 
Yale University. 
New-York. Academy of sciences. 
c 
Nouvelle-Orléans (Louis.) Academy of sciences. 
Ottawa. Greological a. natural history Survey of Canada. 
Royal Society of Canada. 
Philadelphie. Academy of natural sciences. 
(feological Survey of Pennsylvania. 
Wagner free Institute of sciences of Phi¬ 
ladelphia. 
Portland (Maine). Portland Society of natural history. 
Raleüjh (N. Carol.) Elisha Mitchell scientific Society. 
Rochester (New-York). Rochester Academy of science. 
Saint-Louis. Academy of science. 
Missouri hotanical garden. 
Salem (Mass.) American Association for the ' advance- 
ment of science. 
Essex Institute. 
San-Francisco. California Academy of sciences. 
Topeka. Kansas Academy of science. 
Trenton (New-Jersey). Natural history Society. 
Tiifls (Mass.) Tufts College. 
Urhcma (111.) Illinois state laboratory of natural history. 
Washington (U. S.) Department of agriculture. 
Department of the interior ((Teological 
Survey). 
Smithsonian Institution. 
Coast and geodetic Survey Office. 
Naval Ohservatory. 
