Mr. Weaver on the 
222 
greyish green to a dark blackish green. Sometimes, however, it is 
reddish brown, or brick red, and in patches siskin green. In some 
places it acquires the characters of claystone ; and in others, the rock 
consists of ill defined crystals of hornblende and felspar. Calcareous 
spar appears also, disseminated in spots, increasing occasionally so 
much as to constitute nearly the mass of the rock. Disseminated 
iron pyrites likewise occurs, and the greenstone is partly traversed 
by small contemporaneous veins of calcareous spar and quartz; and 
in two instances by veins composed of a mixture of epidote and 
quartz. The greenstone is also porphyritic in some places, as near 
the western side of the quay. 
Proceeding along the coast, we perceive at low water the massy 
greenstone presenting a face, which declines to the southward under 
an angle of 46°, and within a few feet of it is a stratified conglome- 
rate in a similar position, which no doubt rests upon it ; the line 
of range being 15° north of east and south of west. This con- 
glomerate consists of a base of compact greenstone slate merging 
into clay slate, and involving rounded and angular fragments of 
limestone, greenstone, and calcareous spar, and also pebbles of 
a mixture of greenstone and calcareous spar, and of conglomerate, 
analogous in composition to that of the whole mass. Through the 
base a good deal of calcareous spar is disseminated, and sometimes 
also quartz. Some of the fragments are of the size of the head, and 
in general they affect a flattened form with rounded angles, but 
many of them appear as complete pebbles. 
This conglomerate, or coarse greywacke, presents a rough aspect 
in the parts adjacent to the greenstone, but in proceeding to the 
south-eastward we observe it to acquire a finer grain, though oc- 
casionally intermixed with a coarser grained, and passing into 
greywacke slate. It is succeeded by beds which alternate with 
