$ 4$ On Painting. 



fucceeded; and for about a year pall the colours might be 

 expofed two or three times to\he fire without fcaling, if not 

 overcharged with flux, and if not laid on too thick. It 

 has been remarked that foda and potafh introduced into 

 the colours make them fcale ; they are therefore never ufed 

 as fluxes. It is found that thefe alkalies, by becoming vola- 

 tilized, abandon the colour, which when alone cannot form 

 an adhefion with the cruft. 



I have faid that colours are alfo prepared, which, being laid 

 on flat, arc deftined to be fufed in a furnace for baking porce- 

 lain. Thefe colours are not numerous, becaufe few metallic 

 oxides can Hand fuch a heat without being volatilized and 

 difcoloured. Their flux is fand or feld-fpar: as they incor- 

 porate with the crufl they are more brilliant, and never be- 

 come fcaly. 



The third fort of excipient of verifiable metallic colours 

 is giafs without lead. 



The application of thefe colours to glafs constitutes paint- 

 ing on giafs: an art very much pra&ifed fome centuries ago, 

 and which was iuppofed to be loft becaufe out of fafhion ; 

 but it has too direct a dependence on painting in enamel and 

 porcelain to be entirety loft. Befides, a defenption of it may 

 be found in a very great number of works. 

 [To be continued.] 



LVII. On Painting. By Mr. E. Dayes, Painter. 



Essay IV. 



On Grace. 



G 



From vulgar bounds with brave difordcr part, 



And fnatch a grace beyond the reach of art. PoPR. 



GRACEFULNESS, which may be termed the beauty of 

 motion, is an idea not very different from beauty, and almoft 

 infeparable from it. It is an idea belonging to pofture and 

 motion, and will be found to confift in an eafe unaccom- 

 panied with reftraint or difficulty; as at all times the moft 

 eafy will be the moft graceful : it is generally attended with 

 a flight inflection of the body, unbroken, that is, not inter- 

 rupted with fudden angles ; and, in fitting figures, with an 

 eafe approaching to languor. 



Propriety of action is a thing of the nigheft importance to 

 the figure painter, whether he works in large orfmall. 



Exprefhoa does not merely apply to the face, as many fup» 



pole, 



