collection in the world. Until Dr. Paul Bartsch, now retired, was curator, 

 it was second in size to that of the British Museum in London. Today, this 

 study collection contains over 9,000,000 specimens, 600,000 lots or suites 

 and is in the neighborhood of 36,000 species and subspecies. Its curator at 

 the present time is Dr. Harald A. Rehder. 



The Museum of Comparative Zoology at Harvard College, Cambridge, 

 Massachusetts, has risen to second place in the United States within the last 

 15 years. It is famous for its well-kept collection of about 7,000,000 speci- 

 mens, 300,000 lots of approximately 28,000 species and subspecies. Its 

 present curator is Dr. William J. Clench, noted for his development of 

 students in mollusks. Dr. Ruth D. Turner is assistant curator. 



The Academy of Natural Sciences of Philadelphia, Pennsylvania, is 

 third or fourth in size and contains an unusual amount of valuable material. 

 Its present curator, the author, has been with the institution since 1954, 

 succeeding Dr. Henry A. Pilsbry who occupied the post for over 60 years, 

 during which he has contributed more to our science than any other worker. 

 He was preceded by two equally famous curators, George W. Tryon and 

 Thomas Say, America's first malacologist. 



In the midwest, one of our largest fresh-water and land collections is 

 located at the Museum of Zoology, University of Michigan, Ann Arbor. 

 Dr. Henry van der Schalie, an expert on fresh-water clams, is the curator. 

 The Chicago Museum of Natural History in Illinois contains a small but 

 adequate collection and is under the care of Dr. Alan Solem who recently 

 succeeded Dr. Fritz Haas, a scientist well-versed in many phases of mala- 

 cology. 



There are no very large study collections in the southeastern United 

 States, although one of the finest exhibit collections is on display at Rollins 

 College at Winter Park, Florida. It is well worth visiting, for the collection 

 is beautifully lighted and arranged and is instructively labeled. Of equal 

 brilliance, the Simon de Marco collection of rarities is housed in the com- 

 mercial Florida Marine Museum near Fort Myers, Florida. 



The following collections of marine mollusks are located on the Pacific 



Coast of the United States: 



Department of Geology, California Academy of Sciences, Golden Gate Park, San 

 Francisco. Large general collection, emphasis on Eastern Pacific; especially strong in 

 Panamic fauna. Original collection destroyed by fire and earthquake of 1906. Major 

 collections: Henry Hemphill (West American); Emmet Rixford (general); Mackenzie 

 Gordon, Jr. (West American, especially California). Excellent library. Curator: Dr. 

 G. D. Hanna; Associate Curator: Dr. L. G. Hertlein; Research Associate: A. G. Smith. 

 Exhibits. Large collections of Mesozoic and Tertiary fossils. 



Department of Geology, Stanford University, Stanford Station. Very large general 

 collection, emphasis on Eastern Pacific. Major collections: I. S. Oldroyd (West Amer- 

 ican); Henry Hemphill collection of duplicates (West American); G. W. Taylor 

 (general); E. K. Jordan (general); and Sarah Mitchell (Philippine). Excellent library. 

 Curator: Dr. Myra Keen. Exhibits. Large collection of Mesozoic and Tertiary fossils. 



Museum of Paleontology, University of California, Berkeley. Large general collection, 

 emphasis on Eastern Pacific. Major collections: Legislative Purchase of 1884 (general); 

 Warren Cheney (West American); Joseph Howell (West American); D. O. Mills (gen- 

 eral). Curator of Invertebrates: Dr. J. W. Durham; excellent library. Exhibits. Largest 

 collection of Tertiary fossils on the coast; also Paleozoic and Mesozoic collections. 



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