RESEARCH IN CHINA. PLATE XXXIV, 

A. View from pass 6 miles southsoutheast from Téu-ts’un, Shan-si, atlas sheet C J, looking west by north, showing characteristic features 
of loess basins; rounded hills carved from Hlu-t’o slates during the T’ang-hién stage; mantle of Huang-t’u formation which fills the valley 
bottoms, where it is interstratified with marl and extends up on to the hills, surviving even on their windward slopes. 
B. Shi-pan-k’6u, Shan-si, atlas sheet C I. View of the canyon of the T’ai-shan-ho in Cambro-Ordovician limestone, just below T’ién-hua 
coal field; typical limestone canyon of Foén-ho stage; the cliffs are about 600 feet high. 
