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found in any of our libraries at present. 
Sowerby's Thesaurus and Dunker's work on the Mollusks of Japan are notable cases in point, while we are absolutely destitute of the periodicals devoted to Conchology since 1880.

The last entry in the record of Mollusks for 1881 was number 33280; that for 1882 was 33,375, 95 entries of Fish Commission duplicates used in sets for distribution having thus been catalogued.
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