of more than the present
generation.

9. Among all kinds of trees, none are more appropriate for memorial
purposes to the men who did not come back from France, than is the black
walnut. That species itself took a valiant part in warfare. It furnished
material for gunstocks the same as in previous wars, but in the World
War it rendered what was considered by eminent authority, a greater
service in supplying propellors for aeroplanes. The shells of the nuts
contributed their part toward the making of carbon for gas masks, and no
one knows the extent to which walnut kernels made up the delicacies sent
from home to the boys in the trenches. With such a service record as
this, the black walnut is entitled to a memorial of its own. Its value
as a timber tree, as an ornamental, and as a food producer, together
with its great range of adaptability from North to South and East to
West, should justly entitle it to recognition as a National tree.

10. Michigan has a law providing for the planting of nut trees along its
highways. Thus, the state has officially put its approval on the idea
and has become a leader in the encouragement of this great kind of
economy and thrift. It has taken a step toward conservation in a
direction which is highly developed in certain parts of Europe. The
product is sold to the highest bidder and the income used in the upkeep
of the road system. In that manner the roadways of those sections take
care of themselves. In this country millions of dollars of state and
federal moneys are being used this year, (ending June 30, 1921), in the
construction and upkeep of public roads.

Desirable as it would be to accomplish these ends, it could not all be
done at once. Even though there were an abundance of available trees of
tried kinds, it would take a long time to plant them and to care for
them until they might become of profitable bearing age, also public
opinion would need to be remolded in order to insure their care and
protection. Still it can and will be done. The movement is already on;
the Michigan law began to operate soon after being passed, and the
Division of Forestry at the Agricultural College is raising the trees
for planting. Public opinion regarding the care of the trees and their
product will take care of itself when the value of the trees and their
products becomes apparent. Both in California and in Oregon not only nut
but fruit orchards and vineyards, grow beside the roadways with no
p