Proportion of in 

 gredientsi : 



The kind of 

 cheefe* 



1 44 grammes == 5 oz. avoir. 



7 grammes = £ oz. 

 280 grammes = 10 oz. 



2 grammes == 1 dram, 

 SO grammes = 3 oz. 



216 ON FAINTING WITH MILK. 



An improved I have concluded that the oil or Burgundy pitch, the ierous 



compcfit on. p^ an( j a portion of flaked lime, might be entirely left out 

 of the recipe. My paint will, therefore, contain only the 

 cafeous part, a portion of flaked lime and whiting. Reafon- 

 ing pointed put thefe conclufipns ; but my doubts on the fub- 

 jecl were not yet cleared up by experiment. 



I formed a great number of mixtures by conftantly varying 

 in each of them, in oppofite directions, the dofes of cheefe, of 

 lime and of whiting. Many of my experiments were ufelefs ; 

 but I fucceeded in difcovering the following procefs, which 

 appears to me to anfwer the intended purpofe. The follow- 

 ing are the dofes : 



Cheefe or curd well drained 



Slaked lime 



Whiting - 



Fine powdered charcoal 



Water t •; .*! '**; ; .:, • 



This cheefe is commonly called fromage d la pie, or foft 

 cheefe. I have ufed old cheefe which was almoft dry, which 

 neverthelefs afforded good remits, but the frefh cheefe is cer- 

 tainly to be preferred. I muft alfo obferve that thefe cheefes 

 differ from each other ; they are not all equally proper for the 

 purpofe, and I have found fome which compofe colours of 

 little folidity ; they were, jn general, difagreeable to the 

 tafle. 

 Manipulation. Let us now fpeak of the manipulation. At the moment of 

 commencing the operation, a certain quantity of ilrong quick 

 Jime mull; be flaked in the lealt poffible quantity of water, 

 This is the fureft and moft fpeedy method of reducing it into 

 fine powder. The lime is to be fifted, in order to feparate 

 the pieces which do not fall down, and of the powder feven 

 grammes are to be weighed. The quantity of cheefe above 

 indicated is to be taken and pounded till it has the appearance 

 of falve, and with this the feven grammes of lime are to be 

 mixed, and the mixture well agitated, which lofes its con- 

 fidence, and acquires that of hot new made glue. 



On the other hand, whiting in powder is taken, and added 

 to the water and the charcoal, and the whole accurately 

 mixed. This mixture may be paffed through an open fieve, 

 in order that it may be reduced to a liquid homogeneous 

 pafle. 



, The 



