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be determined that specialized gills of the ordinary form are entirely absent, thus rendering necessary the revision of the definition of the entire class and even the final rejection of one of the most commonly received class appellations. The impossibility of getting rare exotic material in a living condition will always give to a well preserved alcoholic collection a certain importance. 

[[underlined]] Accessions during the year. [[/underlined]]

The total list of accessions to this Department will be found in the appendix and amounts to [[blank space]] numbers. 

Among the more important of these