Bacterial strains: a possible role in fire blight. R.J. Vauske. 119

The arterial blood supply to the appendages of the domestic pig (Sus scorfa domesticus). N.G. Ghoshal and Robert Getty. 125

The arterial blood supply to the appendages of the horse. (Equus caballus). N.G. Ghoshal and Robert Getty 153

Outdoor recreation of Iowans- at home. Glenn H. Manning and Frederick S Hopkins, Jr. 183

A compaison of two muskrat populations. Thomas J. Neal. 193

Abundance of Crepidostomum and other intestinal helminths in fishes from Pool 19, Mississippi River. Thomas L. Wenke. 211

Blood pH of channel catfish. Gerad C. Le Tendre. 223