2^ Receipts for Enamel Colours, 



well mixed In the mortar, and calcined so as to stick together, 



but avoid melting. 



Take of the above . . . . . , 1 



Flux, No. 7 2f 



Grind for use. 



Dark Bed. 

 Take sulphate of iron calcined dark 1 

 Flux, No. 7 . . . . . . S , 



Grind for use. 



Light Bed. 

 Take red sulphate of iron . . . . 1 



Fkix, No. 1 3 



White lead 1 i 



Grind for use. 



Eed Brown. 

 Take brown sulphate of iron calcined dark 1 



Flux, No. i .3 



Grind for use. 



Vandyke Brown. 



Take Flux, No. 4 3 



Iron filings . . . , . . 1 



melted together in a crucible, and drawn out with curling 

 tongs*; with so much metal it will noit pour out freely. 

 Take of the above . . . . . . 5 



Black oxide of cobalt , . . . I 



Grind for use. 



A7iother Brown. 

 Take manganese . . . . ♦ • 2| 



Red lead .. ... ... ..81 



Flint powder . . . . . . 4 



calcined to stick together. 



Of this mixture take .. .. .» .. I| 



Of Flux, No. 4, and iron filings melted as above If 



Flux, No. 4 . . . . , I 



Grind for use. 



Black for painting and mixing with other Colours. 

 Take of umber, broken into small bits and calcined to a yellow 

 heat in a crucible, till quite black, then washed in boiling 

 water and dried, . . . . . . 10 



Black oxide of cobalt ,. ., .. 10 



* In this and in other cases where a muffle is not in readiness, an earthen 

 crucible washed with flint powder inside, or with diy flint powder rubbed 

 inside l-8th of an inch thick, may be used, and the materials when partially 

 pielted, so as to stick togetl^r, are completely taken o«t without Ipss. 



Blue 



