BURR: MELAPHYR OF BROOKLINE, BRIGHTON, AND NEWTON. 69 
EXPLANATION OF PLATES. 
PLATE 1. 
Fig. 1. Microphotograph of thin section from upper contact of melaphyr at 
carriage-house quarry, Allston. (Plate 2, Loc. 15.) Shows bedding of 
slate cut and contorted by tongue of igneous rock. y 
Fig. 2. Microphotograph of thin section from upper contact of melaphyr at head 
of Allston Heights. (Plate 2, Loc. 16.) Shows bedding of slate cut 
irregularly by igneous rock and obliterated on contact. Detached frag- 
ments and tongues of slate drawn into melaphyr. 
PLATE 2. 
Map of a part of Brookline, Newton, and Brighton, Mass. 
