El Karstun 1954 Buffalo broom (S2) Sept. 15 Sentinel meadow, 4000 ft., Yojo Valley, Marin Co. Cali. Final check of air thermograph and max-min in valley station. Max-min, air, 92-32° F. Soil 80-35° F. Meadow dried up except for morning dew on grasses. Grasses half-browned out here. Maximum height about 4' but deer have matted much of it down. Western bull thistles still show blossoms in shady areas, but vegetative parts burned out either by poison sprayed on them or natural fall processes. Buckwheat gently brown. Showy milkweed to 3 1/2'; cow purslane (seed already set) to 7' here. Love senotureed to 3', already seeded. No water present this meadow as observed previous visit.