Ojg ON PAINTING WITH MILK, 



be ufed like the foregoing. The experiments' I have made 



on this object, though iatisfaclory, are not yet perfectly equal 



to my withes. 



The paint is mixed according to the preceding instructions, 



and the neceflary degree of fluidity for painting a firft or 



fecond coat is given by means of water, the dole of which 



muit be determined by circumftances and judgment. The 



whole is then covered with the common encauftic, and the 



operation is fini fried as ufuai by rubbing. 



Advantages of I ftiall not. enlarge more amply on the utility of the paint 



t is new paint. w j 1 j c j 1 j j iefe p ro pofe. Every obfervation which has been 



made by Cadet-de-Vaux may be applied to this, becaufe the 



various changes I have made in this procefs do not deprive 



it of any of its advantages j but, on the contrary, render it 



more valuable. The folidity of the painting by. means of 



cheefe is at leaft equal to that of painting with milk and refin ; 



but the former is more beautiful, lefs difpofed to become 



yellow, is mo;e fi-iple, and mutt neceflarily coft much lefs 



than the paint in diftemper with milk, and Hill much lefs than 



the refinous paint with milk. Water does not fpot it, nor 



even leave any trace after it is dried, an advantage which 



fize painting is very far from pofTeffing. 



It may be kept This paint with cheefe may be kept very well, particularly 



very we , or w j ien lt c j 0es not con t a jn much water. I have feveral times 

 made into cakes. 



formed it into cakes, which, when pounded after their entire 



deficcation, formed, by the addition of a very fmall quantity of 

 cheefe and lime, a colour as folid as that which had been 

 newly made. This experiment thews how much the export 

 of this colour manufactured in agricultural dillricts may be- 

 come advantageous in the way of trade. 

 How far this or With regard to the property which the refinous paint with 

 on be h a e p r P e a . bt milk P°tf efl ' es of depriving walls of infeaion by its application 

 fervative againft upon furfaces penetrated with putrid exhalations ; as this 

 infeaion. effecl is purely mechanical, we may by analogy infer that 



painting with cheefe muft anfwer the fame purpofe, becaufe 

 it is fufficiently adhefive and fluid completely to ftop the 

 pores of the itones, plaifter, and wood, to which it adheres 

 no lefs lirongly than the refinous paint with milk. But this 

 property appears to me of little real utility. The procefles 

 which Citizen Guiton has given in his work on difinfe&ing 



the 



