Mayhew 1961 Journal 82. Sept. 22 UCR, Riverside Co., Calif. Today I set up some lizard experiments that I plan to follow this winter in the laboratory. I also placed some animals in outdoor cage #2, and these animals will be followed through the next breeding season. I hope some of these outdoor animals (Uma insinata, U. notata & U. scoparia) will successfully produce young in the outdoor cage. I shall be running 3 experiments in the lab. Cages 1 & 2 contain Phrynosoma m'calli and 1 Phrynosoma platyrhinoe. Cage #1 will have the lights turned off for the winter on October 1st, while cage #2 will continue to receive 11 hours of light per day. This experiment is intended to determine whether these animals must hibernate or not. The arrangement of these animals is recorded in the species field notes. The arrangement of animals in the other experiments also are described in the field notes of the species involved (Dipsozaurus dorsalis, Uma insinata, U. notata, & U. scoparia). Cage #4 contains almost adult U. insinata, U. notata, & U. scoparia that are now on 24 hours of light per day. Both or??