Stout—Vegetation of a Typical Wild Hay Meadow. 
461 
EXPLANATION OF PLATE XIX. 
These plots show the distribution of the principal species. The up- 
per plot of each set shows the numerical abundance and the lower one 
shows the corresponding frequency. In the former the value of each! 
ordinate is 50 in the latter it is 10. The abcissa of both have the value 
of 50 feet. The highest frequency possible for a fifty foot segment, 
estimated as previously explained, is 75. 
No. 1. Red is for Calamagrostis canadensis. 
Black is for Car ex stricta. 
No. 2. Red gives the total combined values of Agrostis alba, Poa 
pratensis, audropogon fuscatus and Glyceria nervata. 
Black is for Lycopus uniflorus. 
No. 3. Red is for Carex Sartwellii. 
Black is for Carex aquatilis. 
