
          A transverse section of the rock
formations from Hoosack Mt west of 
Williams College to Connecticut river
at Northampton. Made from actual
survey of the most important mountains
and after traveling the ground
three times, mostly on foot

Northampton Sep. 20th 1817

Scale calculated
to correspond with the
large map of the state 
of Massachusetts.

NB from Hoosack Mt to 
Goshen the strata are nearly
vertical.
Saddle Mt. is 2300 feet higher
than Wms. College and 100 feet 
higher than the granitic rock
at Adams.
The extent of the greywacke is
uncertain.
It is about 40 miles on an air
here from Hoosack Mt to Northampton.

[Illustration Captions]

[???]
Hoosack Mt.
Williams College
Green river
Saddle Mt.
Hoosack river
Adams Mt.
Deerfield river
Savory
Plainfield
Goshen
Williamsburg

Chlorite strata
Greywacke strata
[Meta?] limestone
Granular quartz
Mica strata
Gneiss
Granular limestone
Granular quartz
Simple granite
Gneiss
Mica strata
Range of iron ore
Granular quart
Sienite & hornblende strata
Mica strata
Granite
with many imbedded
minerals as lead, [?[
zinc, copper, [?]
fluorspar, [?]
[?] green and blue
tourmaline etc. [crossed out material]

General course S 50 E
        