Annual Meeting.] 188 [May 2, 



which are very numerous. The Jurassic, Triassic and Car- 

 boniferous plants of North America have been tripled in 

 number and value by accessions from the Rogers' Collec- 

 tion, and the Devonian and Cretaceous fossils rendered much 

 larger and more complete by additions of a more general 

 character, from the Hale and Cleveland Collections. 



The Botanical Department, under the charge of Mr. Cum- 

 mings, has been steadily progressing, as in former years. 

 The revision of the General Collection is in progress, and 

 about one-fourth of the whole has been completed by Miss 

 Carter, the assistant in this Department. 



Mr. Van Vleck has had the care of the Zoological Collec- 

 tions, and has also been specially engaged in rearranging 

 and labeling the Anatomical Collection. The labor upon 

 this Department has been much greater than was antic- 

 ipated, and the completion of it has been on that account 

 temporarily delayed. 



The catalogue of the Microscopical Collection was finished 

 by Miss Washburn, early in June, 1876. This collection 

 consists, as far as it is catalogued, of 2606 slides and prepa- 

 rations ; 567 of these are preparations of parasitic insects? 

 acquired by purchase from the Burnett estate; 1838 slides 

 were presented in the bequest of Prof. Bailey, consisting 

 mainly of oceanic soundings, and specimens of mud and 

 marl containing foraminiferse and diatoms ; 135 slides are 

 miscellaneous preparations of worms, Crustacea and embryos 

 of various kinds, prepared by J. H. Emerton, when assistant 

 in the Museum; and 113 are preparations of the anatomy 

 and skeletons of sponges prepared by Mr. Crosby and the 

 Custodian. 



There are also some slides of a miscellaneous character, 

 presented by E. Samuels, C. S. Busch, and others. 



The unmounted material is represented by 273 samples of 

 marls, etc., from the Rogers' Collection ; and the duplicate 

 material from the Bailey Collection, which is separately cata- 

 logued, is considerable. All the slides of the Bailey Collec* 





