SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 64, NO. 



VIEW SHOWING MASSIVE CHARACTER OF CAMBRO-ORDOVICIAN LIMESTONE, IN BROAD SYNCLINE 



EAST OF YAU-T'OU COAL FIELD, PROVINCE OF SHAN-SI. 



View also Illustrates abrupt walls of recent canyons where they are cut In heavy limestone. On the 



T'ai shan-ho 4 miles (6.4 km.) southwest of Shi-pan-k'ou, In the district of Wu-t'al-hien, 



Province of Shan-sl. (After Willis, Research in China, Pub. No. 54, Carnegie Institution 



of Washington. Vol. 1, Pt. 1, 1907, PI. 20. p. 148.) 



