These joints were sitting at the north end of Lake Bromsen or Dark Castleton. Beneath the quarry gone there are thin joints of dolomite. One of these is two feet thick and is said to have a wide distribution. At the north end of Lake Glenn we saw a joint 6 feet thick of snow white quartzite. Also much jointed and filled with quartz veins. At one place at the south end of Lake Glenn we saw a vertical cliff, a joint striking cleav[?] a synclinal. All was sharply cleaned at an low angle to the east. From this it is held by Dale that the Lake Bromsen areas all lie in I think on it appeared to be a zone of joints all trending to the S.S.E. and lying a syncline. The main quarry gone along north side of Bromsen is of one kind white thro[ ugh] of Lake Glenn are of the other. Probably all the thin limestones and dolomites have more or less of sand, usually fine but sometimes coarse well rounded grains. What we saw today of the Lower Cambrian would not make a thickness of 1000 feet, but are crowded along the strike, not across it.