Report on the building and ornamental stones of Canada (1912)
Parks, William A, Canada. Mines Branch · Ottawa : Dept. of Mines · leaf 126
infrequent but occur occasionally at right angles to this direction.The extraction of the stone is much assisted by this favourable jointing.Blocks of 100 to 125 cubic feet are frequently raised (Plate X). The stone is very similar in all the beds, the only variation being in therelative abundance… … wards the bottom of the quarry the stone is somewhat darker with a greateramount of this black streaking: this lower stone is not used for the finer typesof buildings. A typical example of the best stone is described in detailbelow as No. 575. As little variation is shown in all the quarries on the…
Building stones
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