196 IOWA ACADEMY OF SCIENCES. 



White, Geol. Sur. Iowa, Vol. 1, p. 138; Bessey, Contr. to the 

 Flora of Iowa, p. 119; Arthur, Contr. to the Flora of Iowa, 

 p. 29; Pammel, Proc. Iowa Acad, of Sciences, Vol. 1, pt. 2, 

 1890-1891, p. 91; Fitzpatrick, Proc. I.owa Acad, of Sciences, 

 Vol. 5, p. 164; Vol. 6, p. 196; Iowa Geol. Sur., Vol. 8, p. 314; 

 Reppert, Iowa Geol, Sur., Vol. 9, p. 387; Macbride, Iowa 

 Geol. Sur., Vol. 7, p. 108; Gray's Manual, Ed. 6, p. 478; 

 Barnes, Reppert, and Miller, Proc. Davenport Acad, of Nat. 

 Sciences, Vol. 8, p. 257; Sargent, Forest Trees of N. A., 

 p. 154. 



SHRUBS AND TREES OF MADISON COUNTY. 



H. A. MUELLER. 



Madison county is considered a prairie country, yet fully 

 one-fourth of its area is covered with shrubs and trees of 

 some description. The county is traversed from the west 

 to the east by three medium-sized streams. North River, 

 Middle River, and Clanton Creek; thus it is known as the 

 "Three-river country." North River, v\rith its two larger 

 tributaries. North Branch and Cedar Creek, is situated in 

 the north half of the county. The principal timber areas 

 along these streams are in Douglas, Jefferson, and Union 

 townships. Middle River flows through the central part, 

 while its largest tributary, Clanton Creek, flows through 

 the south half from the southwest to the northeast. The 

 larger bodies of timber along these two streams lie prin- 

 cipally in Lincoln, Scott, Walnut, and South townships. 

 Nearly three-fourths of South township has been covered 

 with timber. South River flows through a small portion 

 of the southeast part. There is not much timber growing 

 on this stream. Grand River, west of the Mississippi-Mis- 

 souri divide, flows through the southwest corner of the 

 county. Some timber is found along this stream and its 

 branches. 



The surface of Madison county is quite rolling, notably 

 so in the eastern portion. The streams flow through well- 



