Bull. U. S. F. C. 1 897. (To face page 426.) 
Plate X. 
; 
. 
/ ) 
A B 
HOLLOW PEARL MADE BY CHINESE, BY SCALING OFF A LAYER FROM A LARGE OVAL PEARL AND FILLING IT WITH 
A COMPOSITION OF HARD WAX OR SHELLAC TO STRENGTHEN IT. 
A, convex side ; B, concave side, showing portion of the filling adhering along the line of the transverse crack, which revealed the deception. 
9 
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O 
13 
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16 17 18 
Q 
3 
& * & 
■•ft 'm 
IRREGULAR AND BUTTON-SHAPED PEARLS. 
