SAYLES: THE SQUANTUM TILLITE. 147 
signs of stratification, and no visible contacts with underlying or 
overlying beds. Cleavage is well developed. 
Criteria found: — A, B, C, D, J, L. 
Locality 6. Forest Hills Cemetery. In the Forest Hills Cemetery 
there is a small outcrop of tillite. This rock may be found about 100 
feet from the fence north of Walkhill St., opposite the crematorium. 
Here the strike at the contact with slate is N 72° E, and the dip 70° S. 
It is not possible to obtain the thickness. About twenty-five feet are 
exposed. Measuring toward the west there is a distance of 335 feet 
to an outcrop of sandstone, and the latter is exposed twenty-five feet. 
The sandstone is in contact with the main body of the Roxbury con- 
glomerate. The characters of the tillite are much like those at Squan- 
tum Head, to be described later. Thin layers of shale or slate may be 
seen in the tillite a few feet from the slate contact. The matrix is 
arenaceous; the pebbles of all shapes, angular, subangular, and 
rounded. The materials of the- pebbles are the same as at all the 
exposures with no additional varieties yet found. The largest frag- 
ment found was about one foot in diameter. Several shale or slate 
fragments were found mixed with the pebbles. There are no transi- 
tion-beds to the Cambridge slate, and in this the deposit resembles 
that at Squantum Head. Cleavage is well developed. No striated 
pebbles were found. 
Criteria found: — A, B, C, D, J, L, M, O. 
Locality 7. New Calgary Cemetery. At New Calgary Cemetery, 
one fifth of a mile south of Walkhill St., close to the fence on the east, 
a small outcrop of what appears to be tillite may be seen. The strike 
_ of the beds just south is E 6° S, and the dip 76° W. The thickness 
here is not obtainable. The matrix is a gritty argillite. No stratifi- 
cation is visible. The pebbles have angular, subangular, and rounded 
shapes. The position of this bed is right for tillite, the transition- 
beds coming to the south, and south of these the main body of the 
Roxbury conglomerate, while to the north comes thick slate. Very 
little more can be said of this outcrop except that the pebbles so far as 
visible are of granite, and felsite. 
Criteria found: — A, B, C, D, J. 
Locality 8. Morton Street. About fifty feet south of Canterbury 
Street on Morton Street there is an outcrop which resembles very 
closely the tillite at the junction of Blue Hill Avenue and Harvard 
Street. No strike or dip have been obtainable. The matrix is arena- 
ceous. Pebbles are angular, subangular, and rounded. Cleavage 
noted. 
