all shales in about 10 fut mine, due me see the same fauna that occur below the Catagoga bed. I can come in shales with many thin limestones for 10 fut and then again to blue shales with almost no limestone. Drill goes on upward the shales pre- dominating by far, and the argillaceous limestone many. One sees no diagnostic Richmond faunna until the second Catagoga zone and here only on this layer. I did not go higher up in the section today. See July 24 for remainder. The lower Catagoga zone and the Virable bed below are the same collected at the Clay Cliff. Here as here the R. alternata come in higher and then continue upward. In Gottmans Brook or far as I can make out there is no sharp introduction of the Richmond fauna and hardly any of this fauna is present until we get to the second Catagoga zone. Even then and most of it is above that bed. The Richmond fauna is near striking, I suppose because now all the strata are blue mud. I do draw line much to the south with the Clay Cliff towards the open marine creatures. On the basis of the barometer measurement of Collingwood mountain which is about 810 fut from the lake level to the base of the