/. S. Lee — Recent Ice-action in iV. China. 



15 



stratification, they disappear in a very sliort distance. _ Tlie rock 

 is as a whole unstratified and unconsolidated. Were it found in 

 N.AV. Europe or N. America, I doubt if any one would hesitate for 

 a moment to call it Drift or Till. It was this general appearance 

 of the rock that inspired the conviction that if a patient search 

 be continued striated pebbles or blocks could no doubt be found 

 anions; the fraofments. 



SKa.->u.aa-ho S 



Fig. 1. 



-The Sha-yiian-ling from the S.W. — 1, loess ; p, pebble-bed ; b, boulder-bed ; 

 s, sandstone ; d, dolerite. 



A systematic search was at once started. Keeping always a 

 particular object in view, I could perceive now and then suggestions 

 of obliterated striation on the polished surfaces. After toiling for 

 more than two hours, a large slab half-buried (Fig. 2) was 



Fig. 2. — A striated slab found in the Sha-ho-hsien Coalfield, Chi-li, N. China. 

 Max. length and width, 125 x 70 cm. 



found ; on its fla,t surface at least three sets of striae could be clearly 

 observed. Following this find two more striated fragments of 

 similar character fell under my notice (PL II, Fig. 1). Judging 

 from the extraordinarily regular parallel grooves and ridges on 

 their flat surfaces, the suspicion is not absent that they might be 

 merely slickensides. The origin of these fragments, however, 

 does not seem to affect in a serious way the evidential value of the 

 first slab ; for evidence is brought forward by Coaz, Heim, 



