Fig. 2. The North Wood in Early Spring, Showing Nature of Undergrowth 
ECOLOGY 
The natural growth of vegetation has been changed for orna- 
mental purposes, except that of the north hillside, which is 
almost a virgin forest. The area thus may be divided into 
wooded areas and open tracts. Among the first there are two: 
the North or College Wood (I) and the West Wood (II). Of 
the open tracts four may be distinguished, viz.: the West cam- 
pus (III), South hillside (IV), East campus (V) including south- 
east hillside, and the central campus (VI). 
DWIGHT MUNSON MOORE 
The average date of the last killing frost in spring is April 
30, of the first killing frost in the autumn, Oct. 2. The average 
growing season is therefore about 155 days in length. However, 
the minimum growing season is about 1 10 days. ^Trecipita- 
tion is quite uniform over the whole section (in which our area 
is located) and averages about 38 inches per year.^’ ^Tn general 
there is the greatest average rainfall in June and July and the 
least in October.” 
