Clarke Cr. 2469. Plensphatic limestone Stewarts Mill, Lubbegus creek. Clarke Cr. Oriskany formation. A dark brown, cum- glomerate rock, contain- ing many dark colored fragments of fossil animal remains. 2470. Plensphatic limestone From near Harward's creek Clarke Cr. Oriskany formation ? An im- pure form of fine lime- stone rock, gray brown with ochreous material in spots, contains fossil impressions. Lime carb. 21.38 33.98 Magn. Carb. 3.055 11.185 Alx & iron oxid n e n e P2O5 9.71 1.842 Pet ash .83 n e Soda .228 n e Silice insoluble 27.58 31.72 Nv Nv 2469 2470 Lewis Cr. 2484. Limestone, hydraulic, sent to Mr. Pardee by Mr. W. J. Richards of Vanclebur, Lewis Cr. a dull gray fine granular rock, with faint lines of stratification. Lime carb. 48.79 = 27.322 lime Magn. carb. 37.482 = 17.834 magnesia Iron ox & al 2.49 P2O5 .143 Pet ash .49 Soda .058 Silica soluble 1.150 Insoluble silica + silicates 8.850 moisture + loss .547