74 
or to that above it is not quite clear. The conglomerate south 
and east of the melaphyr undoubtedly overlies it, although there 
are no satisfactory exposures of the contact. The limited mass 
of melaphyr between the conglomerate and the granite, although 
possibly not 2% situ, is probably a reappearance of the melaphyr 
separating the two beds of conglomerate. It is topographically | 
below the upper conglomerate. An important east-west fault, a 
continuation of the great border fault already referred to, must 
separate the conglomerate and melaphyr from the adjoining 
ledges of granite; and the latter here exhibit no traces of the 
basal conglomerate. The rather abrupt northward jog of the 
granite border may be explained by a southward extension with a 
slight displacement of the fault between Conglomerate Plateau and 
the marsh, as shown on the map. Farther east the melaphyr 
rises and broadens out, the overlying conglomerate having been 
carried above the present plane of erosion ; and the underlying 
conglomerate fails to outcrop along the southern base of Con- 
glomerate Plateau. In fact indications are not wanting that the | 
melaphyr here covers the entire area between the plateau and h 
the marsh. This would be readily explained without increasing 
the thickness of the melaphyr by simply regarding the beds as 
horizontal here; and the assumption is fully justified, even 
though the contact of the melaphyr and conglomerate can not 
be seen, by the fact that the flow-structure is well-marked in 
this melaphyr and quite horizontal. 
The district between Hull Street and Strait's Pond.— 
This area is separated from the last by the fault, probably of no 
great magnitude, terminating Conglomerate Plateau on the east. | 
It is topographically similar, and composed, apparently, of the 
same conglomerate and melaphyr, although extending. north to 
the great east-west fault and the melaphyr of Centre Hill. \ 
The chief point of difference is found in the frequent alternations 
of conglomerate and melaphyr. These alternations are best ex- 
plained by repeated east-west faults, dividing the district into 
seyen or eight narrow blocks, as shown on the map. No satis- 
