58 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



by minute but definite characters, the determination of which gives 

 an excellent training in accurate work. It was also selected because 

 it is easy to purchase of dealers sufficient material so that each stu- 

 dent can have for his own collection a set of the genera studied. Then 

 there is a five-hour course (i. e., 12}/^ hours per week for a half-year) 

 on the classification of the Coccidse; this is a combined lecture and 

 laboratory course, which enables the student to obtain a knowledge 

 of the classification of this important family, and to acquire the ability 

 to accurately determine species belonging to it. There is also a lab- 

 oratory course on the classification of immature insects, and a lecture 

 course on the literature of systematic entomology. 



An advanced lecture course on the morphology and development of 

 insects is given by the WTiter assisted by Dr. W. A. Riley. This course 

 is supplemented by a course on the histology of insects. This is under 

 the direction of Doctor Riley, and is largely a laboratory course. The 

 students in this course work individually, some devoting much more 

 than the minimum time required, which is three laboratory periods 

 per week throughout the year. It is here that the students get their 

 training in histological methods, and thus lay a foundation for 

 research work in either the morphology or the development of insects. 



Courses on the embryology of insects, on the relation of insects to 

 the diseases of higher animals, and on parasites and parasitism, are 

 also given by Doctor Riley. The last two courses are taken by many 

 students in the Veterinary College and by premedical students in the 

 College of Arts and Sciences. 



The work in economic entomology is under the direction of Pro- 

 fessor Glenn W. Herrick, and consists of both elementary and advanced 

 work in this field. The work in the morphology of insects and in sys- 

 tematic entomology, taken in other divisions of the department of' 

 entomology, is here supplemented by a course in advanced economic 

 entomology and insectary methods, in which the student is trained in 

 the technic of breeding insects, mounting of specipaens, insect photog- 

 raphy, the preparation and apphcation of insecticides, and other details 

 of insectar}' work. 



In the courses on Hmnology, which are given by Dr. J. G. Needham, 

 and which treat of the life of inland waters, much attention is given 

 to the study of aquatic insects, and especially to their ecological rela- 

 tions to each other and to other aquatic organisms. A considerable 

 part of this work is carried on at a biological field station, located in 

 the midst of tHe marshes at the head of Cayuga Lake, and easy of 

 access from the University; so that the work can be continued during 

 the college year as well as in the summer. 



Fourth, graduate students. The work of each graduate student is 



