Adams, C. R., Becker, D. E., Terrill, S. W., Norton, H. W., and Jensen, A. H. Rate of ovulation and implantation in swine as affected by dietary protein: 1245. Alliston, C. W., and Ulberg, L. C. Early pregnancy loss in sheep at ambient temperatures of 70° and 90° F. : 1316. Anderson, D. E., and...

ALLEN, A. D., and LASLEY, J. F. Influence of season of birth on growth rate and survival of pigs: 955. ALMQUIST, J. O., HALE, E. B., and SAACKS, R. G. Effect of frequency of ejaculation on the semen production and sexual activity of young dairy bulls: 1014-1015. BELL, M. C., MURPHREE, R. L., and...

ARNOLD, F. Utilization of proved sires and sons of proved sires: 578-579. At present only about 1 sire out of 8 is alive when proved and worthy of further use. There is little chance of increasing the use of proved sires except through their sons, or through programmes designed to prove bulls at an ...

DELAWARE, 1940-41.
In work on ROCKY MOUNTAIN SPOTTED FEVER rodent trapping was carried out to ascertain the host relationships of the immature forms of Dermacentor variabilis. The meadow mouse, Microtus sp., is a common host. Other rodents had very few of these ticks. Adult D. variabilis infested...