Roford 275 Synomys ludovicianus September 23, 1955 Wind Cave N.P., S. Dakota. Slopa stepens. Schetronia apparent in curdy area; sift loam soil. On S, lower & flatter half Ward D, Dpog dominant + conespineous red-brown; Ward E. has low population, but occupied to near upslope limit, 15% slope. Aristida, Dpog, + Mag = 90% of vegetation. Dpog dominant; Aristida in patches (soil diff. probably). At N.Wedge, edge of plants from in colony area to grass outside is: weeds; Sheldonwaker-Aristida in open stand (weeds too); Baja-Canm (+weeds); Baja (+other grasses), Weeds throughout major area until Baja wall starts, 1/4' tall. Much Sphaeroclea throughout area ward E. Bada rare here (too steep?). Area extends 100 yds. up slope, bring 310° from Coke pipe stable, to edge pinee. // SW part of E. has about 70 yd. long area old luminance where Canm dominant (Cordamalone side) suggesting C.l. kept out surrounding Baja (upslope steeper; Ace present). Patcher Bada in this Canm area. // S half of D (N. of dirt road) mostly Dpog, dry. Oto Chrop. Lept. (= Cle) common, not recent- ly cut, & green where not dense. Patheia Bada seed yards across show little evidence C.l., lawn eating (2" tall). Bada mixes with Aristida at some sites (going which way in succession?). Less two spots many yds. across where Cle thrives, it is 5" tall's dead. In parts SE/4 of D, Mag dominant, 90% of density composition, where density plants 50%. // Generally there has been abandonment of peripheral luminance, or possibly groups with seed dogs. Large moor Word A suggests there went into areas low population, not out. September 24, 1955 Rapid City, S.Dak. Visited Lee Alber, Soil Cons. Service. He identified plants for me & repeated info about albis prairie dogs at east side Paw Neile near Ludlow. He Regarding Aristida-Bada mixture he said