Koford 135 Cynomys ludovicianus June 12, 1955 Devil's Tower Wyoming But actually some was done near boundary. She filed a letter from Mr. Dulige dated 12/1/48 said population of town showed "definite in- crease." James Cole in Dept. 1947 estimated 1300 dogs on 39A of town (40.14 A) in monument area. Mr. Dulige said lodgers seemed to walk at periphery of colony, when burrows presumably shallows & mostly in winter, the few last winters. // Letter from Newell F. Journey, custodian, to George Wright, Dec. 18, 1933: said about 100 dogs in colony, reserve not fenced, & some stools graying there.!! Letter Wright to Journey, Dec. 11, 1933, said "Mr. Dixon" made rough map showing dog town 40-50A, little main roads & runs, estimated 100 dogs in 1931. // Park problem is to keep C.l. as preserve & pre- vent spread to private lands. // A U.S.G.S. man working here said that he knows of more than a dozen C.l. towns outside of the monument in this (Crook) County, but that the colony beside the largest. // I walked around the town. At one point on NE side it had spread down a 10' (±) bank to a lower terrace, still 10' above river level, for 50+ yrs. New soil sandy, having little clay, & would not form a ball. Some burrows, apparently not now used, among 1' high shrub (Symphoricarpos?). On this level, perhaps sometime flooded out by river. // Cutting of tall plants obvious some sites. Astragalus scut (bearing 3/4" diam. fruit now), & silk others, but mainly a sage (at- ensis cava?). In some areas, much sage about 10' high, about 15 cut down. // A few burrows seen filled and trapped at surface - why? - perhaps excore entrance to burrow. Especially in areas where Aristida prominent, many logging about 1" deep. Some mounds of fine sand.