44 Geology, Sc. of the Connecticut. 
13. -Seconpany Greenstone. Cleaveland. 
5st Ras Colored Cantiine, or Rose-Red. 
ie give ‘the ranges of this rock, was one of the princi- 
bev abot in coustencting . the accompanying map. For 
be an anomalous, it is a highly interesting 
pr The high mural precipices that aimee uni- 
seme show their naked faces in the ridges and_hil- 
locks of this rock—the immense quantity of débris that 
frequently poe up half, or two thirds the distance to 
their pe Dee thes oes on of trees. that crown their 
tops ; the p 
ery of the Connecti- 
= "the. basaltic and 
Ae ocemeesommanal 
In regard to the srocmioee Sous of Hartford, 1 feel 
confident that every range of it to be found in place, i is in- 
serted.on the map. South of Hartford some small and low 
hillocks of it may have been overlo Sa sBe Bille 
a fer ss above the | elec at ae 
be less. kn csr in rie oe part of the map. 
d especially, there are so many 
ridges of greenstone, and. these so irregular, that it is diffi- 
cult,on a map of such a scale, to make them all ainles 
and accurate. 
The most southerly point of greenstone on the map. is 
the bluff in Hast-Haven, which fronts Long Island Sound, 
and i« about one mile and an half north of the Li ht-House. 
The most northerly points of this rock are in i an | in 
Northfield... The greenstone which occurs in th 
part of Northfield, is more crystalline and of a peach tex- 
ture aes in the intermediate distance, and is undoubtedly. 
wn ve room, 1 dail 6 enti. in: ahs pupesodes of this article, the term 
ary, as apphed at the head of the a 
“+ There onght to bea geological map of the region stout N ee 
ona larger scale than the one | have giv ‘en: and we could mame more thar 
ene gentleman in that city, who is alli qualified for its construction... ne oe 
