.-V 



















AN HYDRAULIC HAMMER A LA KOREA, USED IN POUNDING GRAIN 



This crude but effective mechanism for utilizing water-power is believed to have been 

 borrowed by the natives of northern Korea from the Chinese. It is not in use in the southern 

 portion of the kingdom. The log is hollowed at one end, and into it a stream of water runs. 

 When the end of the log has become full of water it tips up, the water runs out, and the log 

 falls, pounding the meal (see photograph below). 



THE HAMMER AS IT RISES FROM THE MORTAR ( SKK TEXT, PAGE 3l) 



37 



