unknown to him. A single visit from a representative of the
Department of Agriculture showed him the cause of the trouble, the
corn rootworm, and how it could be eradicated by a simple rotation
of crops. The farmer said that this knowledge would save him
$10,000 a year.

LEADERSHIP AND COOPERATION

The state and national governments spend a great deal of money in
equipping experimental laboratories and employing scientists to
seek out these enemies of the farmer and of the nation, to find
methods of destroying them or counteracting their effects, and to
advise the farmer how he may protect himself and his neighbors.
While the government provides leadership in these matters, it
depends upon the cooperation of the people to get results, as we
have seen in so many cases. A farmer may destroy all the rats, or
ground squirrels, or prairie dogs on his place, but the trouble
will be repeated unless there is community cooperation. The same
thing is true of animal and plant diseases, insect enemies, and so
on.

Investigate and report on:

Further facts regarding losses to farmers of the United States due
to insect and bird enemies, predatory animals, animal and plant
diseases.

Similar losses in your own state.

Estimated losses of individual farmers in your locality from any