PANNELS FOR PAINTEKS. 3 J '7 



Method of purifying Oil for Painting, Make some of the purifying oil. 

 bone-ashes inlo a paste with a little waier, so as to form a mass 

 of ball; put this ball into the fire, and make it red hot ; then 

 immerse it for an hour, in a quantity of raw linseed oil^ suffi- 

 cient to cover it : v/hen cold, pour the oil into bottles, add to 

 it a little bone-ash, let it stand to settle, and in a day it will be 

 dear and fit for use. 



White Colour is made by calcining the bone of sheep's trot- white colour, 

 ters in a clear open fire, till they become a perfect white, 

 which will never change. 



Br'nun Colm.r is made from bones in a similar manner, only Brown, 

 calcining them in a crucible instead of an open fire. 



Yellow-Colour, or Masticot. Take a piece of soft brick, of yellow. 

 a yellowish colour, and burn it in the fire; then take for every 

 pound of brick, a quarter of a pound of flike-white, grind 

 them together and calcine them ; afterward> wash the mixture, 

 to separate the sand, and let the finer part gradually dry for use. 



Red-Colour, equal to Indian-Red. Take some ot the pyrites. Red. 

 visually found in coal-pits, calcine them, and they will pro- 

 duce a beautiful red 



Grej/ Colour is made by calcining together blue-slate and Grey. 

 bone-ashes powdered, grinding them together, afterwards 

 washing them, and drying the mixture gradually. 



Blue-Black is made by burning vine-staiks in a close crucible Blue-black. 

 in a slow fire, till a perfect charcoal is made of them, which 

 must be well ground for use. 



Crayons are niade of bone-ash powder mixed with sperma- Crayons, 

 ceti, adding thereto the colouring matters. The proper pro- 

 portion is, three ounces of spermaceti to one pound of the 

 powder. The spermaceti to be first diffused in a pint of 

 boiling water, then the white bone-a^h added, and the whole 

 to be well ground together, with as much of the colouring 

 matter as may be necessary for the shade of colour wanted. 

 They are then to be rolled up in the proper form, and gra- 

 dually dried upon a board. 



White Chalk, if required to work soft, -is made by adding a white chalk- 

 quarter of a pound of whitening to one pound of the bone-ash 

 powder will answer alone. The coloured chalks are made 

 by grinding the colouring matter with bone-ashes. 



