82 BOULDER REVERIES. 



be left to give ns knowledge of other things 

 than time. 



Pennyroyal and ragweed hold their own with 

 the blue-grass on these upland knolls. In places 

 the ironweed nods high above them, its purple 

 cymes now adding a bit of rich color for the 

 eye to feast upon. The brunella blooms along 

 the shaded banks. The bell-shaped, golden yel- 

 low flowers of the wood-sorrel 14 and the irregu- 

 lar, pale blue corolla and globular calyx of the 

 Indian tobacco 15 are also seen. These seven are 

 the most common plants now in blossom in this 

 woodland pasture. 



The crows call to one another across the val- 

 ley. Of what do they tell ? What messages of 

 love or hate, of good or ill fortune in crow life, 

 go rushing past in the form of sound waves? 

 Do crows and other birds measure time ? Yes, 

 but not by a calendar of years and days. While 

 their calendar, like that of man, is based on the 

 movements of the sun, it is far more natural 

 than his. When, after a season of cold, the 



"Oxalis stricta L. 

 "Lobelia inflata L. 



