10 ANNUAL REPORT OF THE 



Ccelenterates, Crustacea and Vertebrates, and Dr. Castle those 

 on Protozoa, Sponges, Worms, Echinoderms, Insects, and Mol- 

 luscs. The laboratory work was supervised by Dr. Parker, who 

 had as Chief Assistant Mr. C. W. Prentiss and as Sub-Assistant 

 Mr. R. M. Yerkes. 



Dr. Parker conducted the work in Anatomy of Vertebrates 

 (Zoology 3) on the same plan as in the preceding year and had 

 as Assistant Mr. P. Frandsen. Six students were allowed to put 

 the last six weeks of their work in the course on different selected 

 topics in comparative anatomy. 



The course on Microscopical Anatomy (Zoology 4) and that 

 on Embryology of Vertebrates (Zoology 5) were given by Dr. 

 Castle, who had assisted in these courses in the previous years. 

 Mr. H. W. Rand had charge of the laboratory work in both these 

 courses. The ground covered by the lectures in Zoology 4 was 

 substantially the same as in previous years and the laboratory 

 work was on the same animal, Clepsine. In Zoology 5 the lab- 

 oratory work was on the embryology of the chick. In the lec- 

 tures less attention than usual was given to special questions, 

 more to the general outlines of development. 



Dr. Jackson, who was promoted during the year to be Assist- 

 ant Professor of Palaeontology, carried on Zoology 9. Sets of 

 models of Brachiopods and of Trilobites were purchased by the 

 Department to facilitate the instruction on these groups. 



In Zoology 11, given by Dr. Davenport, the number of students 

 was larger than ever before, and from the nature of the work 

 entailed a corresponding increase of labor on the part of the 

 instructor. The results of the work of some of the students in 

 this course — Messrs. P. Frandsen, R. M. Strong, and R. M. 

 Yerkes — have been prepared for publication and will appear in 

 the Contributions from this laboratory. That of Mr. H. W. Rand 

 has already been published as No. 102 of the Contributions. 



The lectures in Zoology 16 by Dr. Parker were followed chiefly 

 by Graduates and Scientific School students. A report was re- 

 quired from each student on some topic selected for reading. 



So much of Dr. Davenport's time had to be given to the work 

 of students in Zoology 11, that he took charge of only the three 

 following students carrying on researches in Zoology 20a : Mr. J. 

 W. Folsom prepared a paper on " The Development of the Mouth- 

 Parts in Anurida maritima Giu'r. : " Mr. W. J. Moenkhaus worked 



