Mineralogy and Geology of Nova Scotia. 243 
green earth, we at first ascribed the color to this substance, as it 
is well known to penetrate other minerals and impart to them a 
green tinge. But as a few of these crystals were covered by a 
thin film of a green carbonate of copper, it seemed probable that 
this substance might be the occasion of the green stain which 
more uniformly pervaded them. In order to ascertain it, we 
digested the powder of a crystal which contained no copper 
mechanically united with it, in nitric acid, and detected this metal 
in the solution by appropriate tests. It is probable that this 
metal may yet be discovered at this locality in crystals occupying 
the cavities of the amygdaloid, as has been observed by Mr. Allan 
in a similar formation in one of the Ferroe Isles. 
The places which next demand our attention, are two emi- 
nences known as Hadley’s and Gates’s Mountains. They are situ- 
ated near each other, and each attains the height of about three 
hundred feet above the level of the Bay of Fundy. The former 
consists mostly of amygdaloid, in which, in many places, nodules 
of chloropheite take the place of the zeolites that usually occu- 
py the cavities of this rock. These nodules are frequently half 
an inch in diameter, and are sometimes hollow, enclosing crystals 
of dog-tooth spar. Specimens of the chloropheite, when re- 
cently broken, are of a greenish tinge, sometimes approaching 
leek green. It is translucent on the edges, and soft, yielding to the 
nail with about the same readiness as horn silver. Its fracture 
is distinctly conchoidal. On exposure to the air, the color 
changes, and the substance becomes black and opaque. This 
peculiar change is also observed in specimens, before being re- 
moved from the rock, even to the depth of six inches from the 
surface. We would observe, that this substance, from its decep- 
tive appearance, has occasioned much speculation among the in- 
