Harshberger on Relation of Ice Storms to Trees. 349 
the first storm was undoubtedly due to the strong wind that 
was blowing at the time. The figures, however, give one 
some idea of the immense weight of ice and snow that a 
forest tree is capable of carrying under ordinary circum- 
stances, and it is only when unusual storms come that the 
limit of strength of each particular species is reached and 
destruction occurs. 
