ENAMEL INDUSTRY. 



499 



able pigments. Hino-oka or Kelsan, a silicic earth, is also often 

 used, besides, but more seldom, Hosha or borax, and Y6-tsuchi, a 

 sort of kaolin. 



Dupre analysed red and green enamel pastes also, and found 

 them composed of the following materials : — 



Green. 



Copper oxide 

 Lead oxide 

 Lime 



Magnesia... 

 Soda 

 Silicic acid 



6' 14 per cent. 



34-89 

 4-62 



0.84 



4-82 



48-69 



1 00 '00 per cent. 



Ferric oxide 

 Lead oxide 

 Lime 



Magnesia... 

 Soda 

 Silicic acid 



Red. 



8 "62 per cent. 

 33*93 



4'49 



0-82 



478 

 47-36 



loo'oo per cent. 



The following recipes were formerly used in Nagoya for making 

 dull enamel colours : — 



1. White (Shiro) 



2. Dark blue (Konjo) ... 



3. Light blue (Awo) ... 



4. Light blue (Usu-awo) 



5. Rape-green (Na-iro) 



6. Yellow (Ki-iro) 



7. Dark violet (Usu-kon) 



8. Red(Aka) 



9. Brown (Cha-iro) 



Shiratama 



T6-no-tsuchi 



Hino-oka 



Shiratama 



T6-no-tsuchi 



Hino-oka 



Kon-j6 



(Cobalt oxide) 



Shiratama 



T6-no-tsuchi 



Daikon 



Awo-ko 



Shiratama 



T6-no-tsuchi 



Hino-oka 



Awo-ko 



Shiratama 



T6-no-tsuchi 



Hino-oka 



Awo-ko 



Daikon 



Shiratama 



T6-no-tsuchi 



Hino-oka 



T6-shirome 



Shiratama 



T6-no-tsuchi 



Kon-jo 



Shiratama 



T6-no-tsuchi 



Hino-oka 



Benigara 



Shiratama 



T6-no-tsuchi 



T6-shirome 



Kei-san 



5 pa 



3 



3 



5 



3 



4 



12 



25 

 30 



7 

 12 



5 

 2 

 2 



20 

 6 



4 



2 



o 



100 



30 

 12 



40 

 20 



25 



10 



6 



2 



O'l 



0-5 



15 



