" This paper gives an excellent account of the use among primitive 

 people, of shells, both as ornaments and as currency. 



"Instructions for Collecting Mollusks, and Other Useful Hints for 

 the Conchologist. By William H. Dall. Published in Bulletin No. 39, 

 part G, of the United States National Museum. 1892. 



" This paper gives full instructions for collecting and preserving 

 the Mollusca. This, as well as other publications of the government, 

 may be obtained by writing to the Secretary of the Smithsonian Insti- 

 tution, Washington, D. C. 



"Those who desire a knowledge of the mollusks of Great Britain 

 and Europe may consult the following volumes: 



"British Conchology. By J. Gwyn Jeffreys. Five volumes. Pub- 

 lished in London, England, from 1862-69. 



" The Land and Fresh-water Mollusks Indigenous to, or Naturalized 

 in, the British Isles. By Augustus Lovell Reeve. Published in Lon- 

 don, in 1863. 



" The Land and Fresh-water Shells of the British Isles. By Richard 

 Rimmer. Published in Edinburgh, in 1880. 



" A Monograph of the Land and Fresh-water Mollusca of the British 

 Isles. By John W. Taylor. 1894. 



" Histoire Naturelle des Mollusques de France. By Moquin-Tandon. 

 Paris. 1855. 



" A concise general account of the mollusks will be found in the 

 article Mollusca, by E. Ray Lankester, in the Encyclopaedia Britannica. 

 Other general accounts will be found in the Zoologies of Parker, Zeitel, 

 and Packard; the Standard Natural History; the Cambridge Natural 

 History; and other general works of this character. 



" Several valuable and costly monographs have been published, 

 illustrated by many colored figures. Several of these may be con- 

 sulted in the large libraries. 



"Conchologia Iconica. By A. L. Reeve. Twenty volumes, 4to. 

 London, 1843 to 1878. 2,600 colored plates. 



" Thesaurus Conchyliorum ; or, Figures and Descriptions of Recent 

 Shells. By G. B. Sowerby. London, 1847. Over forty parts in 8vo. 



" Systematischen Conchylien Cabinet von Martini mid Chemnitz. 

 A German work, of which over 325 parts have been published, contain- 

 ing over 1,800 colored plates. 4to. 



"Those who desire a publication, in which all the known species 

 of mollusks are described and figured, may consult the 



" Manual of Conchology, Structural and Systematic, with illustra- 

 tions of the Species. By George W. Tryon, Jr. Continuation by Henry 



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