THE CRIF-FELL, &C. 
543 
angle of 60''. They vary in thickness from one foot to six 
or seven feet. The strata are generally straight; some- 
times, however, they are waved in one part of their course, 
and straight in another : in some strata the slaty structure 
is throughout parallel with the seams of stratification ; in 
others, it is more or less waved, and the waved and parallel 
structures sometimes occur together in the same stratum. 
Other varieties of arrangement are observable : thus, in the 
same stratum, one part v/ill be a compact slaty syenite, in 
another, a compound of felspar and mica, forming a slaty 
micaceous rock, somewhat resembling gneiss. In other in- 
stances, a stratum, in part of its course, will appear as slaty 
syenite, while, in another, from the nearly complete exclu- 
sion of all the ingredients but hornblende, will have the 
character of hornblende-rock, hornblende-slate, or even 
greenstone : in other cases, portions of a stratum are formed 
entirely of felspar, and nearly in a compact state; or 
the whole stratum, as far as it can be examined, is of 
a greenish colour, and is compact felspar coloured with 
hornblende. These strata of compact and slaty syenite 
alternate with others of coarse granular grey syenite, 
and sometimes they contain imbedded contemporaneous 
portions and veins of coarse granular syenite and of felspar, 
and all of them are occasionally intersected with veins of 
quartz. These interesting rocks extend for several hundred 
feet from the line of junction with the great mass of syenite 
of this district, and gradually pass into the more common 
rocks, as greywacke slate. 
The usual transition-rocks, with syenite, continue to the 
beautifully situated village of New Abbey. The hills 
above New Abbey are of granite and syenite, in both of 
which there are numerous imbedded crystals of sphene, 
and rarely crystals and grains of hyacinth. Both rocks are 
generally coarse granular, sometimes porphyritic, and the 
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