Biological Station 



103. The Natural History of Invertebrate Animals with Refer- 

 ence to the Principles of Ecology. — The course will consist of a care- 

 ful examination of the typical aquatic habitats of the region. This 

 will involve the collection of forms*, the determination of their life 

 histories and structural adaptations and an analysis of the environ- 

 mental factors, biological and physical, influencing- them. In each 

 habitat only those forms will be considered which are of importance 

 in presenting the facts and principles of ecology. Especial atten- 

 tion will be given to analysis of those factors in the lake which make 

 it a suitable abode for organisms. Each student will have actual 

 experience in determining depths, temperature, transparency to light, 

 food content of the water and such other matters as fall within the 

 scope of this analysis. The field work will be supplemented by lec- 

 tures and conferences, so that at the end of the season the student 

 will have a fairly comprehensive picture of the conditions of aquatic 

 life and how animals are affected by these conditions. 



The course is planned particularly for prospective teachers of 

 biology. 



Wednesday and Friday. Four hours credit. Mr. Koelz. 



Prerequisite : Elementary collegiate zoology. 



This course gives two hours credit to graduates, who may ob- 

 tain full credit by registration in Course 103^7. 



105. The Natural History of Insects. — This course is intended 

 to give the student a general acquaintance with the insects of the 

 region and to afford opportunity for the study of the various forms 

 in their native habitats. Field studies are made of .the life histories, 

 habits, and activities of insects belonging to various orders. Em- 

 phasis is placed upon the relation of insects to their environment, and 

 upon economic relations. Some work on the morphology and physiol- 

 ogy of insects is included. Instruction is given in the approved meth- 

 ods of collecting and preserving insects in all stages of development. 

 Opportunity is afforded to form individual collections of properly- 

 determined specimens. 



Monday. Two hours credit. Assistant Professor Ellis. 



Prerequisite : Elementary collegiate zoology. 



This course gives one hour credit to graduates. Students de- 

 siring full credit, must complete extra work, and will register for 

 Course 1050. 



107. Ornithology. — In this course, birds are studied mostly dur- 

 ing their breeding season, but in the latter part of the session, there 

 are opportunities for studying early autumnal migration movements. 

 Special attention is given to identification of birds and methods of 

 field study. Bird behavior and especially nesting habits are consid- 

 ered. Lantern slides are used in studying identification characteris- 

 tics and for illustrating bird behavior. The bird fauna is ample for 

 the course, and it is interesting especially because of the northern 



