Horsten Bluff Tuesday May 26. Between Horsten and Amport. At the eastern end of the shore bluff east of the but more to west effect Horsten fault in rocks either limestone or sandstone, we see the following. The main rock are thick beds of arkose conglomerates. The material is coarse, the pebbles averaging about 1/8 to 3/8 inch with individual grind quartz pebbles up to 1 1/4 inches across. One half of the ar- kose is feldspar some fresh and other some a less carbonized. There is also much black muscovite The pieces ranged up to 3 1/2 inch across that in untransformed are still heals in laminae. Then in der much biotite but more muscovite. The whole material is a fagmental granite rock carried far from the source of supply, because none of the quartz pebbles are rounded; only the edges to the smallest extent are worn away. The bedding is torrential in heavy cross-bedding, and often deeply and sharply channelled into the red clays. Then there are local and quartz pebbles, also pebble each shales free of muscovite blades that have much fagmental plant material and spore cases of 1/8 inch in diameter. Then too there are in