126 



Minerals and geological specimens — Continued. 



160 

 161 

 162 



163 

 164 

 165 

 166 

 167 

 168 



169 

 170 

 171 



172 

 173 

 174 

 175 



176 



177 



178 

 179 



180 

 181 



182 

 183 



184 

 185 

 186 

 187 

 188 

 189 

 190 

 191 



192 



193 

 194 

 195 

 196 

 197 

 198 

 199 



200 

 201 



2(12 

 203 

 204 

 205 

 206 



Snowy gypsum, with n.> stains, equivalent of 153.. 



Gypsum, with crystals of selenite 



Snowy gypsum . 



CRETACEOUS. 



Formation Ho. 1. 



Conglomerate and sandstone, with Unios 



Conglomerate 



do fine,wich Melanias and Cyclas 



Gray arenaceous limestone, with Melania and helix . 



Conglomerate, same as 165 .. 



Arenaceous limestone, (166,) with leaves of cred- 



neria, melanias, &fc . 



Indurated ferruginous clay, with melanias 



Ferruginous sand, with tmio danai 



Indurated clay, with Melanias nnd scales of Lepido- 



tus above 166 . 



Shell limestone containing Melanias 



Impure sandy lignite (stratum D of section) 



Shell limestone, same as 172 



Cream colored shale, burnt from over lignite beds. 

 Compact argillaceous limestone, with Cijiherca oweni 



(marine,) beneath fresh water beds 



Ferruginous sandstone, with J'ellina subtorluosa..... 



Rough, gray, limestone, with Ostrea glabra 



Ferruginous sandstone, with Inoceramus peeienuis, 



upper marine strata 



Lignite, over 179 



Carbonaceous sand from decomposition of lignite 



bed over 179 



Impure shaly lignite, with selenite 



Limestone, with Cypris, lower part of formation 



No. 1 \ 



Silicified wood, ferruginous 



do coniferous 



Bone of saurian 



do or cetacian 



Dense ferruginous sandstone 



Quartzose sandstone, bluish 



Big Horn river . 



Near sources of Yellowstone 



Bad lands of Judith 



do 



do 



do 



do 



-do. 

 .do. 

 .do. 



.do. 

 .do. 

 .do. 

 .do. 

 -do. 



.do. 

 .do. 

 .do. 



.do. 

 .do. 



Rocky Mountain creek. 

 Near Ammel's island .. 



Black hills, east base . 



do do . , 



do do .. 



do do.. 



do do -. 



Black hills, west base. 

 ....do do .. 



Conglomerate from junction of cretcaeous and 

 carboniferous rocks 



Coarse ferruginous sandstone, with pebbles, over 

 199 



Platte valley. 



Dark ferruginous sandstone over 192 



do containing much iron 



do do — do 



Feri'uginous sandstone - 



do fine grained 



Dark, coarse, sandstone, very ferruginous 



Red, ferruginous sandstone, with many species of 



dicotyledonous leaves 



do do 



Light gray quartzose sandstone, with balls of sul- 

 phate of iron over 199 



do with dicotyledonous leaves 



Whitish puverulent sandstone over 199 



do fine grained under 199 



Indurated clay, bluish 



do yeliow 



.do. 

 .d(i. 

 .do. 

 .do. 



Blackbird hill 



Mouth of Elk horn 

 do , 



Black hills 



Black hills .... 



do 



Sioux City 



Blackbird hill.. 



do 



Decatur 



