P. PEARSON 1948 little understory. Close to the stream the ground is covered with oak leaves -- thoroughly ground up with the small big hooves (probably hoep and sheep). Saw a sheep in one of these canyons - a few green acorns are beginning to fall. Sept 10- 12 Persevering in the traps in the east canyon. No jaguar or shrews. Left that line out and put 6 steel traps in the canyon and along the beach between here and Pebear Bay. There is considerable mangroves and cancratothylus and some phytania on the slopes near the north shore. Near the mouth of the second really big canyon west of Prisoner's Harbor is a considerable area of tumbled large boulders with a few living pines and many dead ones. Very old trees of five. The first really big canyon narrows into a very steep-walled chasm with in places the floor scoured down to bed rock, numerous dry falls, and in 3 places deep rock basins full of water at the bottom of these falls. The water very dirty (from hoep + sheep?) darkfull of mosquito larvae and tadpoles. Shot 1 Mosquito flying over beach, some kind of in swalls of house. The "May" people stopped in today. They are all civilians from Katherin Corp. doing "mace propagation" tests (with cooperation of May. They left at