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[[blank page]][[start page]][[underlined]]To San Louis Rey, Moosa & Twin Oaks [[next line]]June 20,[[/underlined]] Got a team & drove up the San Louis Rey river valley as far as Gopher Canyon, up it to Moosa Canyon, up it to head & over into the Twin Oaks valley & back by Vista & down the Vista river. Except in the San Marcos Valley found no evident trace of Lower Sonoran unless Eucalyptis, figs & olives indicate Lower Sonoran. No citrous fruits seen except in Twin Oaks valley where they do well. The low hills near the coast are mainly covered with wild oats but the hills farther back are covered with dense chapparal, Adenostoma, Ceanothus, Prunus ilicifolia, Hetteromeles, the single leaved Rhus & Oak scrub. Am still undecided as to zone limits but am inclined to map all coast exposures as Upper Sonoran & valley behind mountain ranges as Lower Sonoran. Still many species of Eucalyptis, figs, olives & english walnuts do well at Oceanside where given shelter of other trees or buildings.