Smithsonian Report, 1940. — Bishop 



PLATE 1 



1 . PRIMITIVE TYPE OF CART. WITH MERELY A PAIR OF SOLID WOODEN DISKS FOR 

 WHEELS; STILL SURVIVING IN CHINA DOWN TO THE PRESENT DAY. 



2. EARLY TYPE OF WHEEL. ANTEDATING THE USE OF RADIAL SPOKES. CuMM'_.r4LY 



SEEN IN NORTHERN CHINA. 



