This investigation has been concerned with determining the extent to which a small mammal, the cotton rat, may become acclimated to environmental temperatures, and the influence acclimation has upon a population. The study was also designed to determine if acclimation effects on a population can be seen in individual rats.

Photograph taken during daylight of oil well on fire.

Photograph taken during daylight of an oil well on fire.

Photograph taken at night of a structure on fire.

Photograph taken during daylight of an oil well on fire. Caption: "Flames shoot more than 50 feet up a 140-foot-high drilling rig Saturday near Madill as Joe Cawdell, Ardmore, district superintendent for Pure Oil Co."

Photograph taken during daylight of men surveying an oil well. Caption: "Oklahoma's second oil well fire within a week continued to burn wildly 10 miles east of Madill Saturday, sending an orange flame towering 50 feet into the air."

Photograph of a grade stabilization structure. A drop inlet [used for collecting storm water from parking lots and roads]. Drop inlet structure through fill on new highway west of Madill. OK-1439-6.

Photograph of W. H. Rushing and SCS Technician H. E. Boyd kneeling in a field of Midland Bermuda, Green Field Bermuda, and vetch. Photograph does not distinguish the position of Rushing and Boyd. The back of the photograph proclaims, "Midland Bermuda on left, Greenfield Bermuda, right. Vetch overseeded. Cut for hay Aug. 11, 1960. Grazed Feb. until June 2, 1960. Eighty-five (85) head weighed in at 327 lbs., sold at 580 lbs. Five acres Greenfield and 23 acres Midland, 2 years old. Soil Unit 7. Twenty-eight acres yield – 1870 bales hay. W. H. Rushing and SCS technician H. E. Boyd in photo."