Satlbs. — The Squantum Tillite. 



PLATE 7. 



Boulder ix slate at Squanttjm Head. 



Amygdaloidal melaphyre boulder in slate showing evidence of ice rafting. 

 Several other cases of this kind may be found near Squantum Head. This 

 boulder was found at the most western part of the Squantum Head locality. 

 Size of boulder 20 x 9 inches. 



