main terrace north of the river. It extends downstream from Boundary Creek past Chapmans Creek to the vicinity of Mount Peel homestead, where it has been cut off by the inswinging of the river at a subsequent date when it destroyed the upper terrace as well and left the small shelves near Lynn Creek. The two parts now separated by the river form the most striking physiographic feature of the locality. Opposite the ravines where Rawle's and Chapman's Creeks and other tributaries issue from the base of the upper terrace the surface has been modified by former high-level fans of these tributaries according to Cotton's suggestion (loc. cit.). Measurements made with an abney show that the surface may be raised as much as fifty feet, an amount which diminishes progressively in the direction of the margin of the terrace. This gives some idea of the extent to which the level of a terrace may be raised consequent on lateral fan formation. Subsequently the terrace has been trenched by these tributaries as the main river has lowered its base-level, and their high banks show that the terrace has been cut to some extent, if not altogether, in the same material as composes the highest terrace.

It resembles its northern counterpart in the occurrence and distribution of large blocks. While they show only occasionally on the tread of the terrace considerable accumulations lie on the edge and down the riser slope facing the river, and they continue as far downstream as the terrace is preserved, a noteworthy occurrence being about two miles from the Mount Peel homestead. Included in this concentration is a large block of granite-conglomerate seven feet in diameter. This lies over two miles upstream from the site of a similar collection near the end of Moorhouse's Road on the opposite bank of the river. Wherever clear-cut sections can be seen the large blocks rest on rounded gravels and are not embedded in them (Plate 30, Fig. 2).

Lower level terraces are not developed as fully on the south side as on the north side of the river. They occur upstream from the Mount Peel homestead, above and below the infall of Rawle's Creek, while near the intake of the race is an interesting suite of smaller terraces, occasionally mere shelves, five in number in some places and seven in others (Plate 30, Fig. 2), the discrepancy being due to the removal of portions of terraces already formed by the inswinging of the river at lower levels. All these terraces near the intake are veneered with large blocks, while at the intake itself the bed of the river is floored with large blocks, and I am assured by the Resident Engineer that they did not change in position to the slightest extent during the record flood in February of this year (1940). If the blocks now lying in the somewhat confined bed of the present river have not been moved by a record flood, it seems unlikely that those at a higher level on the terraces, where the streams would have been less confined and not so deep, though perhaps larger in volume, could have been carried an appreciable distance to their present positions by water alone.

On the south bank of the river near the intake is an interesting occurrence not obviously connected with glaciation, viz., a discordance in level of about four feet which affects the lowest two terraces of the suite (Plate 32, Fig. 2). Had this affected only one terrace