TOPICAL OUTLINE BY GRADES AND SEASONS ioi 



noting especially the effects of severe frost on the fruit if 

 one occurs. 



Trees: The trees of the campus; general survey; history 

 of the planting of the trees on the campus which fifty years 

 ago was a perfectly treeless piece of prairie; which of these 

 trees are natives of Illinois ? group the principal trees into 

 their botanical families; a special study of catalpa, planting 

 the seeds, and considering its value as a tree to be set out 

 on prairie soil; the planting of catalpa for railroad ties in 

 Illinois; study of its flower; the ways in which forests are 

 destroyed; what is being done to renew the forests? con- 

 sider the causes of the treeless prairies of this region and 

 note their distribution; the natural groves of the county; 

 compare three trees of different kinds as to the growth 

 which they make in one season; using poplar, willow ca- 

 talpa, and oak; compare rates of growth by measurements 

 of year-old twigs showing the large differences in growth 

 rate between "hard" and "soft" woods. 



Birds: Meadow lark, bobolink, purple martin, swifts; 

 the value of the meadow lark and the bobolink in the fields; 

 the value of the martins and the swifts as mosquito and fly 

 destroyers, observing habits before drawing conclusions. 



Insects: Housefly; its habits and relations to man; work 

 out the life history of the mosquito in an aquarium; study 

 the water beetles as enemies of the mosquito, watching 

 them in an aquarium which is also stocked with mosqui- 

 toes; study any insects found on the fruit trees as to their 

 relation to these trees. 



Other Animals: Snails and slugs in relation to garden 

 plants; toads, frogs, and salamanders as to habits, food, 

 life history, and relations to man. 



