. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 330 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. rises further uorth by a faded scarp of gentle slope. Sandstone ledges are abundant along the western base of the spur; they are unusually steep, in part because of the eastward dip of the strata, and in part be- cause of a certain amount of under-cutting by the Westfield when it ran beneath them. The eastern side of the spur is not trimmed close to the defending ledges, but illustrates the uusymmetrical relations shown in Figure 31. Widely as the river has swung from side
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 330 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. rises further uorth by a faded scarp of gentle slope. Sandstone ledges are abundant along the western base of the spur; they are unusually steep, in part because of the eastward dip of the strata, and in part be- cause of a certain amount of under-cutting by the Westfield when it ran beneath them. The eastern side of the spur is not trimmed close to the defending ledges, but illustrates the uusymmetrical relations shown in Figure 31. Widely as the river has swung from side to side in the basin further west, it was here strongly constrained. Not only so : Westfield river has been somewhat impelled northward by the. Fig. 38. entrance of Little river from the south (west of the area shown in Figure 38) ; and it is probably in part at least on this account that the basin has been so well broadened northward ; }ret on every sweep or swing against the sandstone reef, the river was not only restrained from further northward conquest at that point, but was deflected obliquely southward across the valley. It is very probable that the excavation of the subordinate basin, C, is due to this cause, for it is opened further to the south than to the north. Three strong south- ward loops of the river, D, E, F, (including the present one) are here recorded; and it can hardly be by chance that the river has thus. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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