W. Piemer 1949 Journal 7 Oct. Calif, Contra Costa Co: Visited study areas at Pinchurst and Lafayette Reservoir. Improved former lower area by adding more surface cover in way of planks and branches of trees. Marked two Rana boylii. In latter area marked 284 young Triturus torosus. 15 Oct. Visited both study areas again. Added more surface litter to Pinchurst area as last week. Recaptured one subadult Triturus. Took photograph as seasonal record. In Lafayette area marked 270 animals under boards A 4B only. 22 Oct. Visited Pinchurst and Lafayette study areas. In the former stream still dry and cursory examination revealed one Triturus which was marked. Also finished marking roadway for night work. At Lafayette marked 148 specimens of Triturus, all young, and 4 Hyla regilla. All of Triturus marked with 0011 toe pattern with following modified plan in mind. Each visit to the area during which marking is done on young animals a different formula will be used and