EXPLANATION OF PLATE XXIII. 



Korean Printing Block. 



Printing Block. Of wood ; end wedge-shaped for fitting into a holder. Charac- 

 ters both sunken and engraved in relief. Block used for printing the 

 alphabet sheet for children. Length, 17f inches; width, 8 inches. (Cat. 

 No. 77018, U. S. N. M. Seoul, Korea. Collected by Ensign J. B. Berna- 

 dou, U. S. N.) 



