wotice of New Localities of Sahlite, Coccolite, &c. 89 
ing violently together soft crystals of various sizes, and 
then suffering the mass to harden. The lamine were 
highly translucent, and this joined to the richness of their 
colour, and the splendent lustre of their surfaces, many of 
which are from three to five eighths of an inch in diameter, 
make it one of the most beautiful specimens of that mineral, 
which Ihave seen. The sahlite and coccolite pass into 
each other, and are manifestly the same mineral, differing 
only in form, the former being quite compact, and having 
very large lamine. It may be observed in confirmation 
of this, that on the granulated masses are found occasional- 
ly small clusters of perfect crystals about a line in diameter 
and exhibiting the primitive form. 
In examining a small excavation which had been made 
in searching for iron ore, we found crystals of green augite 
which merit more particular notice. The excavation was 
in the bank of a ravine through which ran the stream spo- 
ken of above. The roof and sides of the pit were princi- 
pally composed of green augite rock, having natural fissures, 
so that the fragments which were of irregular shape and size, 
could be easily separated with a pickaxe. The soil was 
strongly impregnated with oxide of iron, and probably, car- 
bonate of lime. ‘The crystals were generally found on the 
edges and surfaces of these fragments, but not always, for 
many specimens were found, in which the crystals were im- 
bedded in a mass of carbonate of lime, or protruded from 
it. On breaking some of these mass¢s, the limestone was 
found to be full of them. The general appearance indica- 
ted that the carb. lime had formed round the crystals. The 
crystals so found were usually of a deeper green than those 
found on the augite rock, apparently from having been de- 
fended from the oxide of iron which covered the latter, and 
occasionally adhering so closely as to demand the use of a 
hard instrument for its removal, though usually yielding to 
water and a brush. . 
A vein of green mica about one foot in breadth and sev- 
eral feet in depth passed through the rocks. It was mostly 
in six sided tables, sometimes in triangular pyramids, vary- 
ing considerably in size, though commonly about half the 
size of the hand, and half and three fourths of an inch thick. 
On the borders of this vein were found nearly all the erys- 
tals. They are evidently augite, or rather I think that 
Vou. VIII.—No. 1. 12 
