Number hi July i, 1922 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



THE MOLLUSCA OF DICKINSON COUNTY, 

 MICHIGAN 



By H. Burringtox Baker 



Introduction 



The field work on which this report is based was done by 

 the writer while connected with a biological expedition sent 

 out by the Michigan Geological and Biological Survey during 

 the summer of 1909. The original paper was finished in 1912; 

 the present paper is simply a condensation of it. although an 

 attempt has also been made to bring the nomenclature up to 

 date. 



The party made their headquarters the hunting camp of 

 Mr. R. C. Flannigan, on the south shore of Brown Lake, 

 about II miles north of Waucedah, Dickinson County, Mich- 

 igan. The work around Brown Lake was done between July 

 and August 2 and between August 13 and 18; the region 

 around Norway was studied from August 3 to August 11. 



