83 almost wholly made up of crinoidal matter. The brachia are seen, and even columns too numerous to count are rare. Towards the top the crinoidal matter is less and finally almost disappears on day the li. look like those of the St. Louis formation, at St. Louis mo. Near the base of the Miss. Li. Strongman got a large dorsal valve of a springothyrus that reminded of S. typus. Branchyllum goes throughout the entire thickness. Some Springonas were also seen. Near the center a species Spirifer reminding of S. plicensis. At not 70 feet beneath the top in red shales are got different layers than a different springona and Lithostrotion proliferum. Finally at the top we saw Branchyllum, and a large cup coral. Bolter last summer got here some large Productus that Strongman noticed. For other forms see p. 37. The top of the Mississippian is eroded very irregularly and in one place we saw a knifed cutout to put right sticking into the Dupai. The contact I sketched is about as follows: Dupai Mississippian