7 cm C, Clinton, fossils. [Platystoma Niagaraense, Baker's only] Heliolites [illegible] wavy between corallites, corallites 7/64 inch diameter + about 1/6 inch apart. Heliolites like Farmer's quarry form with very fine corallites. Farmeres farrensi [Baker's] Farrerite Niagaraense [Baker's, Halysites catenulatus] Baker's, Cyathophyllus calyculus. Ipomea? Arthris bifurcata, rather small, with 2 plications in sinuos [Baker's, Arthus elegantula Arthus flabellicus crummi. [Baker's] Strophomena Hanoverensis. Stickelandsinia Stickelandi. Crummi. Triplesia Cortoni. Atrypa modestriata, Not rare, Phycodella neglecta Cyclenema with ridges along con- volution. Not large. Delaceras ambiguus, [Platyspora quadra, Baker's only] D. Oxford beds. A regular Madison like clay rock at top and about 3 ft down, most of the remaining beds rather shaly but not as in Ry. Sawell limestone, for fossils see 3rd page preceding, In Walden was found pygidium of Dalmanites. See 3rd page preceding. 7 cm Platplate rock very typical. Black slate more than doubled by fault shearing. Nodules unnaturally large. Overlying limestone unnaturally white + fine grained for a Wavely limestone. Wavy shales above the described section very thick + well exposed but not measured.