40 



uosum). This formed the north boundary of the area studied: 

 S. 35, T. 13 N., R. 9 E. (PI. Ill, Fig. 2 ; PI. IV, Fig. 1 and 2.) 



Station II. Prairie area west of Loxa, Illinois. Right-of-way along the 

 Cleveland, Cincinnati, Chicago and St. Louis, or "Big Four," 

 R. R.: Sections 10 and 11, Township 12 N., Range 8 E. 



a. From one half mile west of Loxa west to near Anderson Road, to 

 telegraph pole No. 12330: S. 11, T. 12 N., R. 8 E. (PI. VI. and 

 VII.) 



b. Prairie at Shea's: S. 17, T.12 N., R. 8 E. 



c. Cord Grass (Spartina) Association. East of Shea's: S. 17, T.12 

 N., R.8 E. 



Station III. Prairie east of Charleston. Right of way along the C. C. C. 

 & St. L. R, R. : S. 12, T. 12 N., R. 9 E. ; S. 5, 6, and 7, T. 12 N., 

 R. 10 E. 



a. Rosin-weed (Silpliium terebintliinaceum) Association. Just west 

 of the place where the Ashmore Road crosses the Big Four track ; 

 about one mile east of Charleston : S. 12, T.12 N., R. 9 E. 



b. Blue Stem ( Andropogon) and Rosin-weed (Silpliium terebintliina- 

 ceum) Association. Three fourths of a mile east of the crossing of 

 the Ashmore Road and the Big Four track : S. 6 and 5, T. 12 N., 

 R. 10 E. An area which grades from prairie into transitional for- 

 est conditions. (PI. VIII and IX.) 



Station IV. Bates Woods. On the east bluffs and bottom of the Embar- 

 ras River, north of where the Cleveland, Cincinnati, Chicago and 

 St. Louis, or Big Four, R. R. crosses the river. On the farm of 

 J. I. Bates: S. 5, T. 12 N., R, 10 E. (PI. X, Fig. 1 ; PL XI, XII, 

 and XIII.) 



a. Upland Oak-Hickory Association (Quercus alba and Q. velutina, 

 and Carya alba, C. glabra, and C. ovata.) Second-growth forest. 

 (PI. XII and XIII.) 



b. Embarras Valley and Ravine Slopes, with Oak-Hickory Associa- 

 tion. 



c. Red Oak (Quercus rubra), Elm (Ulmus americana), and Sugar 

 Maple (Acer saccJiarum) Association. Lowland or "second bot- 

 tom," Embarras Valley. (PI. XIV ; XV ; and XVI, Fig. 1 and 2.) 



d. Small streamlet in South Ravine. This formed the southern bor- 

 der of the area examined. A temporary stream. (PI. XVII, Fig. 

 1 and 2.) 



DESCRIPTION OF THE PRAIRIE HABITATS AND ANIMALS 

 I. Prairie Area North of Charleston, Station I 



This area includes patches or islands of prairie vegetation oc- 

 curring along the right-of-way of the Toledo, St. Louis and West- 



