MUSEUM OF COMPARATIVE ZOOLOGY. / 



Dr. Clark's Museum work comprised the rearrangement of the 

 ophiurans and spatangoid Echini, and the description and illus- 

 tration of the species to be included in the sixth part of the Memoir 

 on the Hawaiian and other Pacific Echini. 



Dr. H. B. Bigelow completed his report on the 1914-1915 

 cruises of the U. S. Bureau of Fisheries Schooner Grampus, and 

 catalogued and arranged the new accessions of coelenterates. 

 Illness necessitated the absence of Dr. Bigelow from his Museum 

 duties for five months. 



Prof. P. E. Raymond's Museum work has been divided between 

 the rearrangement of the trilobites in zoological sequence, and 

 the selection and arrangement of a stratigraphic collection. 

 The collection of trilobites is contained in 480 Museum trays, and 

 of these, the specimens of 244 trays are identified and labeled. 

 For the stratigraphic collection, a representative series of Palaeo- 

 zoic species in GOO Museum trays has been arranged in strati- 

 graphic order, and the beginning made for a similar collection 

 from Mesozoic and Caenozoic formations. Eighty Museum trays 

 of specimens from the Ordovician of central Pennsylvania have 

 been given by Mr. R. M. Field, and a fine series of blastoids and 

 nine Museum trays of Cambrian and Carboniferous fossils from 

 Montana are the gift of Mr. T. II. Clark. 



Miss Elvira Wood resumed her work on 1 December, 1915, 

 and during the remainder of the year, she was engaged in revising 

 the identification and the arrangement of the study series of 

 Tertiary Gastropoda. 



Mr. R. W. Sayles has continued in charge of the Geological 

 Collections, and reports that nearly all the accessions belong to 

 the division of economic geology. The largest and most valuable, 

 a collection of 300 ores, chiefly from the Cripple Creek region of 

 Colorado, is the gift of Mrs. August R. Meyer of Kansas City. 

 Prof. E. C. Jeffrey's colored photomicrographs, (55 in number), 

 illustrative of the origin of coal, make an effective and valuable 

 exhibit. 



Mr. George Nelson's services as Museum Preparator have been 

 as varied and as skilful as usual; his dexterous treatment of 

 valuable types of birds, which were prepared according to the 

 methods in vogue seventy-five years ago, has been most successful. 

 Mr. Nelson has also made a large number of negatives, principally 

 for illustrations for publications of the Museum. 



Since January, 1916, Mr. A. B. Fuller has been employed as 

 Preparator, his time being occupied entirely in making over and 

 mounting the skins of mammals and birds. 



