300 



THE POPULAR SCIENCE MONTHLY. 



ware by being fused into the body as in porcelain. Tbe body and 

 glaze being thus in constant antagonism to each other, produce 

 sooner or later what is technically called " crazing " or cracking 

 of the enamel, for the reason that the body is one thing, produced 



at a higher temperature, and the glaze another, produced at a lower 

 temperature, and not as in porcelain, body and glaze produced at 

 the same time, and at the last and greatest heat. 



Fig. 28 shows a tete<i4ete set, with head of Chinaman on the 

 cover of the tea-pot, a negro's head on the sugar-bowl, and goat's 

 head on the creamer. 



