SPORT AND SCIENCE ON THE 



time, much close study and hard work will be 

 required to reduce them to a system. There is 

 evidence of great volcanic disturbance all along, 

 and northward of this border line. 



Nowhere are the sedimentary rocks visible, 

 except well to the east of the eastern extremity 

 of the loop, and far to the north-west of its western 

 extremity. 



This chapter is divided into nine parts, each 

 dealing with a different section of country. The 

 first four include the sedimentary formations 

 which lie south of the outer loop of the Wall ; 

 while of the others, four consist of notes upon the 

 igneous and metamorphic rocks just mentioned, 

 and one (Part 8) deals with the recurrence of the 

 sedimentary rocks in and west of North-western 

 Shansi. 



The parts are as follows : — 

 Part 1. The geology of the country traversed by 

 the Chen-T'ai Railway : Western Chihli 

 and Eastern Shansi. 

 Part 2. The geology of the country traversed by 

 Anderson and the author in 1908 : Nor- 

 thern Shensi, the Ordos, and Western 

 Shansi. 

 Part 3. The geology of the Upper Fen Ho basin 



Western Shansi. 

 Part 4. The geology of the country traversed by 

 the Peking-Kalgan Railway, North 

 Chihh. 



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