12 ANNUAL REPORT OF THE 



The lectures in Zoology 5a covered only the early stages in the 

 embryology of vertebrates. Mr. D. H. Wenrich was the assistant 

 in charge of the laboratory work in both Harvard and Radcliffe. 



The lectures of the courses in Entomology — Zoology 7a, 7b and 

 7c — were given partly in Cambridge and partly in connection 

 with the laboratory work, which was carried on at the Bussey 

 Institution. Courses 7a and 7b were given by Professor Wheeler 

 and Assistant Professor Brues. Course 7a in Radcliffe and course 

 7c were given by Assistant Professor Brues. 



The course in variation, heredity, and breeding (Zoology and 

 Botany 11) was given by Professors Castle and East. 



The assistant in Zoology 12 was Mr. D. H. Wenrich. The 

 course was given by Professor Mark. 



Zoology 14b, given by Professor Parker, was taken as either a 

 thesis course or a laboratory course. Each of those who elected 

 the laboratory work was assigned a special topic — eight in 

 Harvard, and one in Radcliffe. Of the former, four reached results 

 thought to be worthy of publication. 



Of the eight Harvard students taking Zoology 17 under Assistant 

 Professor Rand, five took the course with laboratory work, and 

 the Radcliffe student also elected laboratory work. The others 

 wrote theses on assigned topics. 



Professor Parker gave a course of lectures on Zoology, with 

 laboratory work, to twenty-three teachers in the Teachers' School 

 of Science. The exercises occupied two hours every Saturday 

 afternoon during the first half year. The assistant was Mr. 

 W. J. Crozier. 



In research there were thirty-one enrolments in Harvard, four 

 in Radcliffe. The work done was, for office purposes, regarded 

 as the equivalent of courses as follows: in Harvard, Zoology 20a 

 and 20b, under Professor Mark, six courses, Zoology 20c, under 

 Professor Parker, eleven and a half courses, Zoology 20d, under 

 Professor Castle, six courses, Zoology 20e and 20g, under Assistant 

 Professor Rand, three and a half courses, Zoology 20f and 20h, 

 under Professor Wheeler, seventeen courses; in Radcliffe, Zoology 

 20c (Professor Parker) two courses, Zoology 20e and 20g (Assistant 

 Professor Rand) one and a half courses. Research courses 20d, 

 20f, and 20h were carried on at the Bussey Institution. 



The degree of Ph.D. was conferred on William John Crozier 

 in February, 1915. His thesis, Studies on sensory stimulation, 

 embraced four investigations entitled respectively : — 1 . The sen- 

 sory reactions of Holothuria surinamensis Ludwig; 2. The orien- 



