Feb., 1912. 



Jade. 



141 



it only reaches 1.7 cm. The long sides of the kuei are 2.5 cm long, 

 the two ridges 2.2 cm. All edges of the circular portion as well as of 

 the two kuei have been chamfered, except the ridge-poles of these 



Sfc^sJ*' 



5-5 



Fig. 64. 

 Tube, tsti ts'ung, Green Jade with Russet Spots and ' 'a Zone permeated by Mercury." 



which are pointed. Altogether, this piece has been worked with great 

 care, and the dimensions have been ascertained and regulated from 

 conscientious measuring, and with appliance of rule and compass; a line 



Fig. 65. 

 Tube, tsu ts'ung, of Green Jade with Zone of Clayish Matter. 



connecting the two points of the kuei will pass exactly through the 

 centre of the circular perforation. 



The same cannot be said of the other piece (Fig. 5, same Plate) 

 which looks somewhat grotesque in its clumsy irregularity. The 

 connecting-line of the points of the kuei passes here the extreme right 

 portion of the inner circle, leaving there a small segment; nor do the 



