Smithsonian miscellaneous collections . break up. Lanes through the denseundergrowth indicate recently abandoned watercourses, many ofwhich hold ponds and sloughs. The erosional effects of ice are alsoseen in the scarred and abraded tree trunks and the deep gouges andgashes along the higher banks. The bars on the lower part of the stream are low and frequentlycovered with stranded trees and other drift materials, but on theupper reaches where the bends are more abrupt, they are fairly clearof drift and furnish a good path for the trackers. On some of theupper river bars the interstratified san
Smithsonian miscellaneous collections . break up. Lanes through the denseundergrowth indicate recently abandoned watercourses, many ofwhich hold ponds and sloughs. The erosional effects of ice are alsoseen in the scarred and abraded tree trunks and the deep gouges andgashes along the higher banks. The bars on the lower part of the stream are low and frequentlycovered with stranded trees and other drift materials, but on theupper reaches where the bends are more abrupt, they are fairly clearof drift and furnish a good path for the trackers. On some of theupper river bars the interstratified sands and gravels have been piledin great heaps nearly as high as the inclosing banks. In ascendingthe stream, the first two days good progress was made with the pad-dle against the clear but sluggish current, but on the third day, tofacilitate our movements against the rapidly increasing current, a 1 Maddren. A. G.: Smithsonian Misc. Coll., vol. xux, No. 1584, 1905. SMITHSOMIAM MISCELLANEOUS COLLECTIOMS, VOL. 51 GILMORE, PL. II. i! i
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
