. Bulletin. 1901-13. Agriculture; Agriculture. RELATIONSHIP OF THE DIFFERENT ASSOCIATIONS. 65 formation and passing through the Gutierrezia-Artemisia association; second, that beginning with tlie hchen formation and passing through the bunch-grass and the wire-grass associations; third, that begin- ning mth the blow-out and passing through the sand-hills mixed asso- 4Fti-. 7FT Fig. 21.—Sketch showing root distribution in Iho sand-hills mixed association. Sand-grass, a; sand sage, &,* bunch-grass, c; big bluestem, d; bush morning-glory, e; wire-grass,/; black grama, g. ciation, and, with th


. Bulletin. 1901-13. Agriculture; Agriculture. RELATIONSHIP OF THE DIFFERENT ASSOCIATIONS. 65 formation and passing through the Gutierrezia-Artemisia association; second, that beginning with tlie hchen formation and passing through the bunch-grass and the wire-grass associations; third, that begin- ning mth the blow-out and passing through the sand-hills mixed asso- 4Fti-. 7FT Fig. 21.—Sketch showing root distribution in Iho sand-hills mixed association. Sand-grass, a; sand sage, &,* bunch-grass, c; big bluestem, d; bush morning-glory, e; wire-grass,/; black grama, g. ciation, and, with the aid of fires or of grazing, through the bunch- grass and the wire-grass associations. SUCCESSIONS DUE TO THE INTERVENTION OF MAX.*^ The successions duo to the intervention of man are of importance in this connection from two points of view. In the first place they show to what extent damage is done to the native pasture or range o See footnote, p. 19. 65399°—Bui. 201—11 5. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Plant Industry, Soils, and Agricultural Engineering. Washington Govt. Print. Off


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