CERAMICS. 



485 



^.—Analyses of Porcelain Materials from various 



SOURCES. 



Explanations of the foregoing tables. 



A contains several analyses of Arita-ishi, the basis of the cele- 

 brated porcelain industry in Hizen ; and B contains analyses of 

 porcelain stones of varying origin and character. 



A I., B I., III. and IV. were made by Dr. C. Sarnoiv, in the 

 Royal Porcelain Factory at Charlottenburg, and published in the 

 TJionindiistriezeitimgy 1878, No. 28. I myself collected the 

 material in Japan. Sarnow makes the following notes : A I., 

 Arita-ishi. *' White, stony substance, with numerous black spots 

 in it ; almost capable of resisting the porcelain-fire." B I., Ama- 

 kusa-ishi. *' White, stony substance, yielding, when broken to 

 pieces, a white powder, which, mixed to consistency with water, 

 melts at the temperature in which the porcelain of the Royal 

 Porcelain Factory of Berlin is burned." B II., Kutani-ishi. "Stone 

 of a yellow colour, or yellowish white, threaded with yellow veins, 

 and showing indications of melting in the porcelain-fire." B III., 

 Tonokuchi-ishi, kaolin, from the vicinity of Lake Inawashiro. 

 *' The pieces are of a yellowish white colour, very resistible to fire, 

 and burning quite white." 



^11. and III. are analyses of Arita-stone, published by Giimbel 

 in Dirigl. Polyt. Jotirn., Bd. 227, p. 501. He obtained the ma- 

 terial through Dr. G. Wagener, from the Vienna Exhibition. 



The analyses A IV., V, VI., VII., were made by H. Wurtz, and 

 are reproduced by Atkinson in Vol. VIII., p. 273, of the " Transac- 

 tions As. Soc. of Japan," 1880. In the same article, R. W. Atkinson 



