266 



PLANTS AND MAN 



\ 



short, flattened, blunt at the ends and narrowed at the base into 

 short stalks which are attached to woody outgrowths of the stem 

 as in the spruces. The cones are small, and hang from the 

 branches. 



W^i 



-is" 



% 



'H 



Fig. 187. — Eastern hemlock is a common tree on slopes of ravines; the excurrent 

 type of habit indicated by this specimen is characteristic of most conifers. 



There are four species of hemlock native to North America, 

 two of which occur in the east, and two in the west. Only two of 

 these are of appreciable present day economic importance. 

 Eastern hemlock (fig. 187) is rather generally distributed 

 through northeastern United States, and in the mountains 

 reaches its southern limits in Georgia. As a rule not over seventy 



