Electaries. 431 



- SoHd essence of sprats, Extract of sprats. Essence of sprats 71b., 

 wheat flour, well dried, q. s. to give the consistence of cream, 

 adding a little common bole to colour it, then evaporate in a steam 

 bath to the consistence of butter. 



Bittenu Extract of cocculus Indicus, extract of quassia, Spanish 

 liquorice, calcined sulphate of iron ; sold in large casks to brewers. 



Multum. Extract of quassia, and liquorice root; used by 

 brewers in lieu of hops and malt. 



Bitter balls, for hreicers. Pulv. rad. gent. 81b., extr. gent. 4ib., 

 treacle q. s. to roll up in balls. 



Flash. Extract of capsicum with sugar, but sold as burnt 

 sugar and isinglass ; used to colour branay and rum, and make 

 them appear stronger. 



USED IN THE ARTS. 



Composition for encaustic painting. Gum Arabic 9 oz., water 

 a pint ; dissolve, add mastich in fine powder 14 oz., boil to a paste, 

 aod white wax 10 oz., in small pieces, and whilst hot, add by 

 degrees cold spring water 2 pints, then strain the composition, 

 which will be like cream. 



2. Mix mastich 24 oz., with the gum water, leaving out the wax, 

 and when sufficiently heated and mixed over the fire, add by de- 

 grees cold water 24 oz., and strain. 



3. Dissolve gum Arabic 2 oz., in water 24 oz., add lib. of white 

 wax, boil over a slow fire, pour it into a cold vessel, beat it well 

 together ; when this is mixed with the colours, it will require more 

 water than the others. 



Used in painting, the colours being mixed with these com- 

 positions as with oil, adding water, if necessary ; when the painting 

 is finished, melt some white wax, and with a hard brush varnisn 

 the painting, and when cold rub it to make it entirely smooth. 



Blackin// paste. Rape oil 3 oz., oil of vitriol 3 oz., mix; the 

 next day acid treacle, ivory black, of each 3lb., stone blue 6 oz., 

 vinegar q. s. to form a thick paste : this will fill 1 doz. tin boxes. 

 — 2. Rape oil 3 oz., treacle, brown sugar ana 9 oz. ; mix, add 

 ivory black 3lb., flour paste 2lb. ; when the paste is quite smooth, 

 thin it to the consistence of honey, with vinegar q. s. : used for 

 making blacking for leather. 



Armenian cement. Soak isinglass in water until it is soft, then 

 dissolve it in rect. spirit. In 2 oz. of this dissolve gum galbanum 

 or prum ammoniac, of either gr. x, add .5 or 6 large tears of y^ 

 mastich reduced to a liquid state by rectified spirit. The cement 

 must be kept closely stopped, and when wanted for use melted 



