S86 Professor Jameson’s Account of the 
the strata on one side of the hill dip to the north, on the oppo- 
site to the south, and in the middle or centre of the hill they 
are nearly perpendicular. Numerous veins of compact quartz 
traverse the slate in all directions. A quarry, which has been 
wrought to considerable extent on the east side of the Lion’s 
Rump, and which is shewn in Plate VI. Fig. 1., but on a lar- 
ger scale than the proportions of the general elevation, affords 
a line view of the structure of the clay-slate, and in one place 
there is a bed of sandstone in the slate. The sandstone, which 
is of a yellowish-grey colour, is composed of grains of quartz, 
with disseminated felspar and scales of mica. 
Lion^s Head. 
The strata of clay-slate continue to the base of the LiorCs 
Head. Here they are succeeded by strata of compact gneiss, 
which is composed of grey felspar and quartz, with much dark 
brown mica in small scales. The gneiss is distinctly stratified, 
and the strata in some places dip under the next rock, which is 
granite, in others they dip from it. Numerous transitions are 
to be observed from the gneiss into the granite, and in the same 
bed of compact gneiss, one part will be gneiss and another gra- 
nite.^ Portions of granite of various sizes are imbedded in the 
gneiss^ and numerous blocks of gneiss, varying much in size, 
are imbedded in the granite. Sometimes the imbedded portions 
of granite and gneiss are distinctly separated from the surround- 
ing rock ; in other instances they are much intermixed at their 
line of junction, and veins shoot from the imbedded portions of 
granite into the surrounding gneiss. Beds of granite appear in 
some places to alternate with the compact gneiss. Veins of granite, 
varying from a few inches to several feet in width,, traverse the 
gneiss, and are to be observed shooting from the granite, or are 
contained in the gneiss, and do not appear to have any connection 
^^nth beds or masses of granite. Granite forms a considerable 
portion of the Lion’s Head, It is a compound of pale red fel- 
spar, grey quartz, and hrownish-black mica. It is more fre- 
quently coarse granular than fine granular, and is often porphy- 
ritic. It is occasionally traversed by veins of quartz, or of fel- 
spar, or of granite. It does not appear to be distinctly strati- 
fied in any part of the mountain. In some parts the granite is 
intersected by veins of greenstone, and one of these veins (re- 
