. Soil physics and management. of Geology, .^rd edition. * King, F. Suspension of Solids in Fluids and the Nature of Colloids and Solutions. Transactions Wisconsin Acad. Arts and Letters,volume lli, part 1. lOOS. * Babb. Science, volume 21. ISOo. p. ;>4o. General References.—^IcGee. W. Bulletin 71. Bureau of Ptll. Soil Erosion. Davis. K. O. Bulletin ISO. 1!> Erosion in tlio South. Salisbury. R. Agencies which TransportMaterial on the Earths Surface, Journal of Geology* volume iii, p. 170. CHAPTETI IV THE PLx^CING OF SOIL MATERIAL (Co
. Soil physics and management. of Geology, .^rd edition. * King, F. Suspension of Solids in Fluids and the Nature of Colloids and Solutions. Transactions Wisconsin Acad. Arts and Letters,volume lli, part 1. lOOS. * Babb. Science, volume 21. ISOo. p. ;>4o. General References.—^IcGee. W. Bulletin 71. Bureau of Ptll. Soil Erosion. Davis. K. O. Bulletin ISO. 1!> Erosion in tlio South. Salisbury. R. Agencies which TransportMaterial on the Earths Surface, Journal of Geology* volume iii, p. 170. CHAPTETI IV THE PLx^CING OF SOIL MATERIAL (Continued)II. GLACIAL OR ICE-LAID DEPOSITS Tile glaciers and ice «lieets of ionner times covered extensiveareas with deposits of material that may be divided into morainal,iiitermorainal, drmiiliiis, kames, and eskers. During the glacial])criod, practically all of North America north of the Ohio andMissouri Elvers, amounting to 4,000,000 square miles, Avas coveredwith an ice sheet (Fig. 32) that had gradually pushed southward. Fig. 32.—Front of Chenega Glacier compared with Washington Monument, 550 feet high. (Lawrence Martin.)
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