There is no Christian here since neither here nor elsewhere about Corington have I seen the charac- teristic upon Christian fossils. The Marcellus rest directly on beds holding specific conchina. The latter fossil is the one persistent marker of the Beercroft line. I was greatly surprised to see so great a thickness of this formation, ... To morrow I will work out this section in more detail. April 15-1911. The Marcellus of the above account is the 8 feet of shale mentioned on the next page after this. It is still in the Beercroft, as the 15 feet lying above the shale is 11 feet of Beercroft followed by 4 feet of Christian. Then the yell mist to greenish shale of the Marcellus