ON PAINTING WITH MIL.K, £Jf 



The mixture of lime and clieefe is then to be added, and 

 carefully mixed with that of the whiting and charcoal dirfufed 

 in water. The colour is then finifhed. 



The dofes here pointed afford a colour too thick to be ufed Dilution, 

 in this ftate. We muft therefore add to the mixture a quan- 

 tity of water neCehary to communicate the degree of fluidity 

 defired ; but this addition muft not be made till the moment 

 before it is ufed, for I have obferved that the colour keeps 

 better the lefs water it contains. 



Two hundred and ten grammes of water added to the Surface covcre4. 

 colour, made as before prefcribed, afford the neceffary quan- 

 tity for exactly covering a fquare furface of 1,948 meters, or 

 one toife or fathom. It may, however, be eafily appre- 

 hended that the doles of water, and even thofe of charcoal, 

 may be varied to a certain point, according to the judgment 

 of the operator. 



When a red or yellow colour is defired, fimilar to that Colour, 

 which is ufed for pannels, ceilings, &c. I fubftitute, inftead 

 of whiting and charcoal in the. foregoing procefs, the colouring 

 matter which I intend to ufe. The following are the pre- 

 parations which appeared to me to afford the moft folid 

 colour moft capable of fupporting the encauftic and wax 

 (I'encauftique et le cirage.) 



Well dried curd or cheefe - 1 44 grammes" 



Slaked lime - - - . 7 grammes 



Colouring matter - 200 grammes # 



If, inftead of the ocres, we fubftitute charcoal in a ftate of Shining cffeft by- 

 high divifion, lamp black, for example, we obtained a black wax or fu§ar * 

 colour, which may be ufed with fuccefs to blacken the leather 

 of trunks. 



When the colour is dry, if it be defired to give it a fkining 

 appearance, it is covered with two coats of a folution of 

 white wax in the eflential oil of turpentine. When this kind 

 of encauftic is dry, the wax may be polifhed by friction with a 

 clean cloth. This preparation has the advantage that it does 

 not fcale, but refills water a little, properties which the com- 

 pofitions ufually applied to this purpofe do not poffefs. 



If, to the mixture of cheefe, lime and lamp black, a fmall 



quantity of dried fugar or honey be added, a black colour is 



obtained, which dries fpeedily, and is fufficiently fliining to 



3 be 



