MUSEUM OF COMPAKATIVE ZOOLOGY. 23 



rangement was made with the students whereby the Laboratory 

 acquires a selected portion of the preparations made in the course ; 

 these preparations are to be added from year to year to the em- 

 bryological and histological collections already acquired. 



The new course on Fossil Invertebrates, by Dr. R. T. Jackson, 

 Zoology 9, was taken by one student, a graduate. It is expected 

 that this course will be elected in future by an increasing number 

 of zoological students, who need to supplement their knowledge of 

 recent forms by the broader view which embraces extinct species, 

 and the lessons taught by their sequence in time. A valuable col- 

 lection of fifty species of Cretaceous and Tertiary Protozoa was 

 purchased for use in this course. 



The subjects treated of by Dr. Davenport in his lectures on Ex- 

 perimental Morphology (Zoology 10) were this year ontogenetic. 

 As usual each student worked on a special problem. The results 

 have in two cases been embodied in papers now ready for publica- 

 tion. A short paper giving the results of studies in this course 

 in 1896-97 has recently been published as No. XCII. of the Con- 

 tributions, and another paper based on the work of a student in 

 Radcliffe College has also been published in the Contributions as 

 No. LXXXYI. The provisions for work in the Aquarium Room 

 in the basement have been of great value in this course, and the 

 room itself has been made more agreeable and safe for work in the 

 coldest weather by the addition of storm windows. 



Zoology 15 was given by Dr. Parker, as usual. The general 

 subject was this year " Sense Organs." Two students enrolled in 

 the Medical School, in addition to those under the Faculty of Arts 

 and Sciences, were in attendance on this course. When provision 

 can be made for supplementing the lectures with laboratory work, 

 the course will be more valuable, especially to zoological and 

 medical students. 



The number of students carrying on investigations under me 

 (Zoology 20 a) was the same as in the previous year. The papers 

 produced in this course and published since my last report are 

 numbered LXXXIL, LXXXIV., LXXXVIII., LXXXIX., XC, 

 and XCI. in the Contributions. Those now in course of publica- 

 tion are by Tower, Folsom, Bancroft, Waite, and Galloway (Dero). 



At the last Commencement, the degree of Doctor of Philosophy 

 was conferred upon two candidates in Zoology, Mr. Frank Watts 

 Bancroft and Mr. Frederick Clayton Waite. The subjects of their 



