34 THE NAUTILUS. 



been an active member of tlie Academy of Natural Sciences of 

 Philadelphia, and in identifying species he is almost unrivalled. 

 "While not the largest, his collection of shells is one of the finest in 

 America, and in his specialty, the Olividse, there is no other collec- 

 tion in America, which can appi-oach it in the number and beauty 

 of the specimens. 



The Association is growing rapidly. There are now upon its rolls, 

 representatives from Canada, Massachusetts, Rhode Island, New 

 York, New Jersey, Pennsylvania, Maryland, District of Columbia, 

 Virginia, South Carolina, Florida, Texas, Ohio, Indiana, Illinois, 

 Michigan, Wisconsin, Minnesota, Iowa, Missouri, Nebraska, Kansas 

 and California. It is the intention to eventually enroll the conchol- 

 ogists of Central and South America, Mexico and the West Indies, 

 as well as of the United States and Canada. From the tenor of the 

 correspondence received by the officers, the idea of the Association 

 meets with much favor. 



Dr. V. Sterki of New Philadelphia, Ohio, requests the loan from 

 members, of North and South American Pupidte for study and com- 

 parison. He jjromises to return promptly and in good condition, 

 the specimens which may be sent to him. 



Frank C. Baker, of the Academy of Natural Sciences, Phila- 

 delphia, was a member of the Academy's recent expedition to Mexico 

 He has returned, bringing with him numerous conchological acquisi- 

 tions, as a partial result of the trip. 



Rev. A. Dean of Muncy. Pa., has had the degree of D. D. con- 

 ferred upon him. 



The address of Prof William H. Dall of the U. S. National 

 Museum, Washington, upon " Deep Sea ]\Iollusksand the conditions 

 under which they exist " has been printed in pamphlet form. The 

 address was delivered before the Biological Society of Washington, 

 of which Professor Dall is the President. Another able paper of 

 the professor's, " On dynamic influences in evolution " has also been 

 printed in pamphlet form. 



Geo. AV. Harper, Principal of the Woodward High School, Cin- 

 cinnati, Ohio, is the author of a " Catalogue of the Unionida3 of the 

 Mississippi Valley." 



