16 



REPORT ON THE INSTRUCTION IN BIOLOGY. 



By Professors Farlow and Mark, and Mr. G. H. Parker. 



The instruction in Zoology during the Academic year 1888-89 

 covered substantially the same ground as in the preceding year. 

 The Nat. Hist. Courses 2, 13, and 9 were conducted by Dr. 

 Mark ; Nat. Hist. 6, and the zoological half of Nat. Hist. 5, by 

 Mr. G. H. Parker. 



In Nat. Hist. 2, there were fifty-eight students: one Graduate, 

 five Seniors, twelve Juniors, sixteen Sophomores, fifteen Fresh- 

 men, four Specials, and five Scientific Students. In the 

 laboratory work the instructor had the assistance of Mr. C. B. 

 Davenport. 



Nat. Hist. 13 was elected by nine students : three Graduates 

 and six Undergraduates. The lectures were on methods of work 

 in microscopic anatomy and embryology, and on the anatomy and 

 histology of Hydra, Taenia, and Lumbricus, — the animals studied 

 in the laboratory work of the course. 



Nat. Hist. 9 was pursued by four Graduates and by Mr. Parker, 

 the Instructor in Zoology. Mr. Parker's studies, which were con- 

 tinued from the preceding year, are completed, and his paper, 

 " The Histology and Development of the Eyes in the Lobster," 

 is ready for publication. A paper by Mr. C. H. Eigenmann, " On 

 the Egg Membranes and Micropyle of some Osseous Fishes," 

 which was begun in the autumn of 1887, was completed early in 

 the year, and will soon be issued in the Museum Bulletin. One 

 of the students was interrupted in his studies by a serious sick- 

 ness of several months ; the others will be able to present the 

 results of their work during the current year. 



Dr. Mark has published in the Twentieth Annual Report of the 

 Massachusetts State Board of Health an article on Trichinae 

 in Swine," and has finished the first part of his studies on the 

 Embryology of Lepidosteus, the plates accompanying which are 



