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REPORT ON THE CONCHOLOGICAL DEPARTMENT. 



By Charles E. Hamlin. 



From November, 1876, the work of identifying and revising 

 species of marine Lamellibranchiata, in which I was then en- 

 gaged, was carried forward through the winter and early spring, 

 — all time not given to instruction being so employed. 



In May, labor upon the collection of Fossils, now stored in 

 the attic, was taken up where it was left when interrupted by 

 the cold of winter. The Palaeozoic Mollusca were arranged 

 in the order of their geological age and by classes, distributed 

 into their respective families and genera, and were placed in the 

 glazed cases provided for their reception. The fossil Fishes, 

 Articulates, and Radiates were arranged in accordance with their 

 geological succession. 



Part of two days in each week of the academic year 1876-77 

 was given by me to instructing a college class in Structural 

 Geology and Physical Geography. 



In consequence of the death of Mr. Anthony, it becomes my 

 duty to report upon that part of the work of which he had more 

 immediate charge. As during the four years previous, his 

 special attention was given to the Land and Fresh-water Mol- 

 lusca, and the conducting of exchanges with numerous corre- 

 spondents. His records show that from Nov. 23, 1876, to Sept. 1, 

 1877, there were received eleven packages, containing, besides 

 much material for other departments, two thousand four hun- 

 dred and forty-five specimens of shells, representing one hundred 

 and twenty-five species. 



The number of packages forwarded to different persons and 

 institutions, during the same time, was sixteen, including one 

 thousand six hundred and fourteen species, and five thousand 

 five hundred and fifty-six specimens. The larger consignments 

 were made to Dr. Henry Dohrn of Stettin, Prussia ; C. E. Bed- 



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