1085 Yellow Magnesian limestone, under Silicia, Salt lick Creek, 4 miles above Clark's dam, Lewis Cr. R2, Brownish buff Ferruginous l. Full of small cysts & ex- terior surface or scales to be scratched off a nail. 1086. Sandstone of handsome dark-buff cyl. at fork of Salt Lick Creek, Adam Bantam farm, Lewis Cr. 1085 1086 CaO of Ca. 55.240 trace " Mg. 27.820 .732 Al. oxid Fe & Mn 12.280 51.800 Pr ox .207 .118 H2O by .152 .200 Potash .163 trace Srde .124 trace Sulph. third calc. 2.500 96.920 H2O loss 1.428 2.230 1122. Peters clay marl, W. 1123. Magnesian limestone, good building at me, from Wm. Corrigins farm, at Kellity's Madison Co. 1124 Black shale, plates of black marl Co. 1122 1123 1124. silica 62.58 silica= . al. 21.98 al.oxid Fe 63.120 oxi. of Fe 4.78 +Mn. 29.60 ) 8.560 Glauber trace CaCO3-30.729 CaO+Ca 11.180 Magnesia 11.76 2.0034 oxides of alumina Pr Ox matt. .271 .143 H2SO4 .234 .509 16.53 Peroxide 2.607 .374 1.343 Srde .500 .058 Bitumatter Hydroxides at red heat 6.140 14.180 +H2O= 1.599 12.00