(mother decided to divide) bark and compound fence with alternate splits. Nearby this is a historic algarrobo also with bronze tablet. Under this tree occurred (1819) some heroic deed during the war with Spain. The whole valley may have had many more trees at one time. at 10p.m (after dinner!) put 1/2 bag of traps (by full the cemetery. twilight) around Sep. 30 Tilcara Cemetery line had nothing. Stone wall around edge of pasture had 3 lbs. graomodes and 1 big Rh. megalaria. The latter along stone wall, somewhat brushy, with Schinus trees. Mountains in background. In afternoon walked to La Garganta del Diablo, a dramatic canyon east of town. About a mile further on are a couple of forms that according to one of the people in Tilcara is Alfaretto, a location given by Thomas as 15 km NE Mainran. There used to be a good road to Alfareto, but scale slides have narrowed it to a burro trail. At Alfareto are a stream with waterfalls, saguaros, short cacti, bushes, old stone walls, grass, a few cultivated fields, some fallen- pineapple but not as much as on the hills nearby, a few willows, and some Schinus or algarrobo. The stone wall with some brush and the cacti with loose rocks look like a good meeting place for Rh. darwinii and graomodes - as Lisson or Burdin found. A cold wind blowing up the valley most of the day with sunny clouds on the nearby hills, but mostly sunny here. Local people say Sierra de Zenta is east of Humhuaca, not 10km E of Tilcara as I have read from Thomas. This makes sense with the A.G.S. map. Tilcara Oct. 1 almost 2 bags of traps out along brushy stone walls. Early part of night cloudy, but clear in a.m. with light frost in