22 Geology, Sc. of the Connecticut. 
Hampton,) primitive greenstone, greenstone slate, mica 
te and gneiss, so that without mentioning therare mine- 
rals found in the vicinity, it is evident that an interesting 
assemblage of rocks is presented in the neighbourhood for 
the instruction of the geological student. 
Fac Simile of Goshen Graphic Granite. [See Plate 1, Fig. 1.] 
A description of this granite has been already given in the 
First Part of this Sketch. But having since discovered 
some more perfect specimens, I thought it might not be un- 
acceptable to have one of them copied. It is not common 
to find specimens so wel! marked as the one from which the 
plate was taken ; yet, in general, they are quite handsome. 
points, triangles, &c. of quartz, usually enlarge, or di- 
minish, as they traverse the feldspar. Thus, the specimen, 
of which the plate is a copy, exhibited on its opposite side 
(about four inches distant from the surface that was copied,) 
the same characters but four times as large. . 
Pseudomorphous Granite. [See Plate 1, Fig. 2.] 
Tt is not an easy matter to give a good graphic represen- 
tation of this rock. Perhaps however, the one annexed may 
assist in understanding the description given on p. 17, vol. vi. 
The dark part represents the plates of mica ;—the red part 
the quartz, and the uncoloured portion, the feldspar. This 
rock occurs abundantly in Goshen, connected with the 
graphic granite above described ; and the transition of the 
ene into the other is usually very sudden. 
Lusus Naturae. [See Plate 1, Fig. 3.] 
For a description of this, see page 15, vol. vi. 
Desiderata in the Geology and Mineralogy of the Connec- 
tteut. 
_ It may be remarked in general, that but a small part of 
the geology and mineralogy of this region has been brought 
to that degree of perfection to. which these sciences have 
heen carried in some countries in Europe; and, therefore, 
