UTILIZATION" OF ELM. 
9 
the three important species. There is yet considerable standing 
timber of white elm in these two States, and one of the principal 
sources of supply is the northern third of the southern peninsula of 
Michigan. A large part of the total supply of cork elm also comes 
from the southern parts of Wisconsin and Michigan. This species 
of elm is being exhausted much more rapidly than the others. 
So much of the forest timber has been removed in the Great Lakes 
region that factories requiring a large supply of cheap elm timber 
have in many cases been forcod to discontinue operations there. 
Future supplies in this region must come largely from'woodlots and 
small timber holdings. 
Fig. 3. — Distribution of cork elm (Ulmus racemosa). 
There is considerable standing white elm in the southern Mississippi 
Valley region, where it has only recently been exploited to any great 
extent. Arkansas is now one of the principal sources of white-elm 
timber, but factories in that State which demand large quantities of 
elm in the log are already complaining that they have considerable 
trouble in securing a sufficient supply. Many of such factories have 
removed farther south to Mississippi and Louisiana. These two 
States have been yielding increasing amounts of elm saw timber 
each year and must be depended on for a large part of such timber 
in the future as well as a supply in log form for elm-using factories. 
The elm timber of the southern Mississippi Valley region, in gen- 
eral, seems to differ in quality from that obtained in the Great 
50425°— 18— Bull. 683 2 
