66 W. W. Dodge—Menevian Argillites at Braintree, Mase. 
so far as exposed, 288 feet west of the railroad, 312 at Hough's 
Neck, the strata being nearly vertical. e conglomerate as 
seen on the south side of Ho ugh’s Neck is penetrated by vari- 
ous eruptives, feldspathic as well as pyroxenic. 
Ti) 
Quarries. . 
Upper Syenite; Q 
= 
eke cn en Oe SF Pe z 
% 
¥ Rrhinte . 
S = Argillites; L 
Qui ne 4 Vey en Af 
Tue MENEVIAN OF BRAINTREE, MASSACHUSETTS, AND AssociaTeD Rocks. By W. W. Dopesr, 1882. 
Lower Syenite; U 
the icing towns Pesta theo eh and in Weston, 
have a strong resemblance to each other, so Fong as ass the 
body of the ee That in Weston is porphyritic with large 
ee -twinned feldspar crystals; Mr. Secs by has noted the — 
urrence of the same peculiarity at one place in Hingham. 
