till have been scratched by this later movement. On the afternoon of June 23, 1892, there was a thunder storm which washed out the Trescott road east of the village of Hanover and cut into the esker by the Ledyard bridge more than has been effected during forty years of ordinary wear. That exposure brought to light stones that had been imbedded in the till of Balch Hill, having two sorts of striæ upon them, first, those pointing southeasterly, evidently made by the normal deposition in the till; secondly, inferior ones upon the surface with a course of south or S. 10° W. These stones seem to have held in place by the compactness of the till, while the movement down the valley carved out the additional lines.

Such a view will explain the phenomenon occasionally seen of two sets of striæ upon boulders. There is besides the consideration that large erratics often rest upon the till, but are of later origin.

I have not had the opportunity to demonstrate the truth of this view, but have found other stones imbedded in the surface of the till that are explicable in the same way, and we may for the present treat it as a working hypothesis till something better is discovered.

MORAINES.

Besides the ground moraine, our field of study shows us examples of the moraines of recession, if not some that are true terminals. Plate XXX shows an interesting accumulation of moraines near the Birch schoolhouse, in the west edge of Hartford on the height of land between the White and Ottaquechee rivers.

Something related to these piles of debris may be seen at almost every one of the cols between the larger streams.

One such may be seen east of Vail ridge in Pomfret. The following are examples of hummocks of till, moraine-like, in various localities: West of the Poor Farm, Norwich, and south towards the bend in the river; the valley through New Boston as far as Schoolhouse No. 17, west of Meeting-House Hill; the southwest part of Thetford; this material when the ice melted constituted the high terraces about Union village; the north end of Farnum Hill, Lebanon, and from Scytheville south between Farnum and Storrs' hills; the northwest part of Plainfield. There is a notable thickness of till through which Dimick Brook has cut its way for more than a mile, south of West Hartford. There is a suggestion of a terminal moraine coming nearly to the Connecticut in West Lebanon. Also an absence of modified drift to the west of Governor's Hill near the northwest

corner of Hartland. One of the features of a terminal moraine is the presence of an immense pile of sand that has been washed from it. Such is the case here, only a considerable portion of the stratified material has come from the tributary rather than the main stream. Well defined moraines connected with the edge of the great ice sheet have not yet been worked out in the vicinity of our field of labor; one may be looked for a few miles west of Ascutney and another along the lower Ammonoosuc.

Hanover, N. H., hill S. E. from Etna.. S. 40° E., S. 20° E., S. 10°

E. Near each other.

Above copper mine, Rudsboro..... .S. 20° E.

East of I. Fellows'..

And numerous for a mile to the north.

S. 10° W.

S. H. west of Moose Mountain..... S. 8° E.

West of Pinneo Hill, little valley. . . . S. 20° W.