Hillum beneath the base of the quarry. These make the th of the Medina. These do not seem to have a greater thickness of more than 10 feet other than the section of the first quarry takes of ad goes down (Bullers) To the south east of the mountain turn piles there is another quarry. When the latter section may be seen in one wall. There as in the other quarry the base is where the dolomite begins all the Medina sandstone still efflores. This face is about 32 feet high, The Medina along the turn piles are not quite close are those at the top of the first visited quarry. The concretions layer is here, but low and dwindled, and about eight feet beneath the gray stone in seen the red soil of the first described section. This for these latter beds that I spot my Medina forms. A little further down the road we see that the dolomite series makes a precipitous cliff while the Medina beneath makes a sloping surface. The Medina red bed gneiss is about 1 to 6 feet thick and about 8 feet beneath the dolomite. Going down the hill to Ferryman Arc one sees that the entire here side is of a red clay just like the old Medina shale beds in the Mojave gyps. From the cliff down of to the dolomite the elevation maybe 200 feet.