Vigorous Rodent War Urged. Damage by smaller rodents on stock ranges, while not so spectacular as that by wolves, mountain lions and coyotes, in some coses more than equals that of the predatory animals, according to Dr. A. K. Fisher of the United States biological survey. There should be closer co-operation, particularly particu-larly In the matter of appropriations, between the federal and state governments, govern-ments, so that the largest amount available from both sources may be obtained, he says. It Is declared that If the prairie dog alone were exterminated 4,000.000 more cattle and 4.000,000 more sheep could be raised because of the Increase In the amount of forage