Occas, Papers. Boston Soc Nat. Hist.. IV. | 
— t 
11955" | B. umm EE P - wise i 
і = at ^ | 
* Р | 
U H 
$ 
Hardin gs Ledge 
T *. E 
Z/Z 7 
@ Ay * i 
* » E Í | 
a Peddocks Id. | 
Z / 2 | 
4 | 
. 2 Б he P ree. 3 D lille Black Rock — 
: „„ . E Minots Ledge Lights 
i ER Кы. 
Lo. o [io:; AMA C /Aselnahd 1 VM | TE : 
$ V Serait’s nd s i 
v G . 7 
Мыр у < Black Ledge | 
Granite 
Plateau zi 7 o T E 
Z š. ^i Kimballs Pt. e. | 
ae E А Brush: ld, 
7 ADT 
^" Stoddards Neck MUN 
Baker: 5 
141 | 
r а. j; 
7 yr us Danoda a torri as brai لد لونک‎ a 
rd i 
TY 
Hockley“ * 
LJ 
| 
GEOLOGY OF THE BOSTON BASIN, BY W. O. CROSBY. GENER:AL MAP, SHEET 1. 
| j Scale sana or linch =2400 feet. | 
| 600 1200 2400 4800 
n 4 1 
One Mile. 
иур | , DU 777 S 5 [us 
„ jones ш в ш O = p S 
Quterops of Іт portant Bowlders Granitic Rocks, Conglomerate en, ^r Slate. Melaphyr Porphyrite, Outlines of Aumes — Salt Marsh. Fresh Marsh. Kettle-holes. Fau (ts. 
Diorite. and Ledges. (Granite, Diorite, Series, and Tuff. Dramilins. 
and Felsite.) | ; | 
