Koford Cynomys ludovicianus July 27,1955 Wind Cave N.P. S. Dakota much cut where there? 50' in from S. edge, much Cypertanthe (= Cryptantha?) Asmw (4 some Amurachia?, Nodewa, Euphalia). Then, toward periphery, 16" tall Asmw & mustards, + Sphaerolea (some Loppoda, Cheno. lept., Bjo, Solidago, Nodewa). Succession at edge far from clear or Diagrammoti. This last probably original condition. Before C. L. work; tall weeds 75% of vegetation. 11 Stacked 3 boulders at S. limit activity in June. Nearest burrow not used now, 60' S. of this pile, 2' tall mustards, + Asmw, Sphaerolea, 1' Solidago, & thin mulch (80% unvegetated at bore.plante). Old burrow in this area had Sphaerolea 12" tall; also Asmw & Mustards on mound. 11' Shorttail soils & vegetation too complex for great usefulness in diagnosing soil effects C. L. on vegetation. 3 mi. N. Fairburn (Custer Co.) at 1:30 p.m. I visited C. L. colony that I helped to poison with 1080 on afternoon of July 25. Found 4 dead on ground, saw an alive & lively, heard 2 more, but apparently still good. No other dead animals found. Still many burrowing animals; 6 seen in distance of 100 yds. (Casts aside all present, including grasshopper, staphylinids). Barley cut to about 40' from butt cows in the field. Apparently cut when green; some still partly green, 8" tall. Kochia, Amaranthus, & other weeds in barley field not seen to be cut; judging by little eating of grain than 4 observations July 25, few dogs were in pen field now. At edge barley field every stalk cut at about 3" for hundreds of square feet. One area, all cut 2 crops, in 450 yds. wide space. Burrows in unemployed areas - Bogs near edge field, but some well-developed 100 yds. into field. When most numerous, these spaced about an unemployed edge ground & regular, about 20 yds. apart. One mound in field i there, 6' diam. One burrow in field had cleared area 14x20 yds. around it. One burrow on unemployed Cheno. all 1/4" clean, stalks cut at 5"-ht. On me.