SaYLEes.— The Squantum Tillite 
PLATE 11. 
EBBLE FROM TILLITE AND PEBBLE FROM TILL. 
On the left is a quartzite pebble from the tillite at Franklin Park, showing one 
blunted end, concave fractures, striae, and ice shaping. On the lower surface 
there are a number of striae running in different directions. This pebble has 
been slightly squeezed at the pointed end; the contact of the matrix with the 
pebble may be seen on the lower surface. A small piece of matrix adheres to 
the pebble on the upper left hand side. 
The pebble on the right is the type found very ccvhenetrs in till. This one 
was found at Mystic in the Pleistocene till of a drumlin. In general char- 
acters it is very much like the pebble from Franklin Park. 
