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work on the Tertiary Mollusks of the Southern States and a small collection from Eastern Siberia, and further researches by Mr. Simpson on the Unionidae.

State of the Collection

In previous reports I have explained why it is not yet possible to give the exact number of species, specimens, duplicates, etc contained in the collection.  In my last report it was estimated that the collection contained about [[strikethrough]]477[[/strikethrough]] 482,725 specimens, of which about 100,000 are preserved in alcahal  

[[left margin note]]Mr. Dall says change[[/margin note]]

During the year about 5600 specimens were received, which would make a present total