OF TREE BRANCHES AT FREEZING TEMPERATURES 
* 
we oe a aati 
a sate . 
tee, 
Pi. 
. ) 
Fic. 3. Photograph of European linden tree No. rt at + 14° F. (18° below freez- 
ing) showing marked depression of branches. See position of branches at A, B, C. 
D and E. 
