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occurrence of garnet in the conglomerate may be as follows, 
viz. : garnet is a very common accessory of crystalline rocks, 
occurring mostly in slates of various kinds, such as talc- 
slate, mica-slate, chlori tic- slate, and aluminous-slate; it 
also occurs in gneiss, granite, porphyry, serpentine, and 
granular limestone. One or more of the above-mentioned 
rocks containing crystallised garnets already formed, were 
disintegrated by the action of water, and the resulting 
debris (consisting of grains or pebbles of quartz and garnets) 
was carried away and deposited in a semi-fluid mass of silica 
and cal cite and thus cemented together. The question 
which next arises is, where and what is the original garnet 
rock in the neighbourhood of Ramsbottom ; is it perhaps 
the aluminous shale ? This problem still remains to be 
worked out. It is evident however at once on examining 
the conglomerate that there is a large excess of quartz 
grains present, with a very fair sprinkling of garnets • 
whilst the cement is not present in any great amount. An 
examination of thin sections of this rock under the micro- 
scope may clear up some doubts, and throw further light 
upon its origin. 
Fibrous Roch-Scdt (Sodium Chloride). 
This anomalous formation has always been an interesting 
one, on account of the strong cubical “ habit” of rock-salt, 
all other forms than that of a well-defined cube heino* rari- 
O 
ties. The fibrous formation is not due to a crystallisation 
of the sodium chloride in another system than the regular 
system, but is explained by an abnormal development of 
four cubical faces parallel to one axis, which may with pro- 
