Missouri Bureau of Geology and Mines. 



Vol. XVII, 2nd Series, Plate 49. 



rn 



3 



12 



■ 



Q 



m 



11 



13 



14 



17 



20 



18 



19 



21 



3 



22 



23 24 25 



^ <*$ 4^ 



28 29 



15 



2$ 



31 32 



16 



33 341 



39 





4P _# ^ ^ V9 



45 



