476 XII. CONSISTENT AND DRY COMPOUNDS. 



Crayons. Spermaceti 3 oz., boiling water 1 pint, add bone ashes 

 finely ground lib., colouring matter, as ochre, &c. q. p. roll out 

 the paste, and when half dry cut it in pipes. — 2. Pipeclay, coloured 

 with ochre, &c. q. p. make it a paste with ale wort. 



Parotic cement^ Universal cement. Curdle skim milk, press the 

 whey out of it, break the curd into small pieces, and dry it until it 

 becomes fit to grind, in a coffee mill, to a coarse powder ; 100 oz. 

 of fresh curd by drying is reduced to about 30. Take perfectly 

 dried curd 10 oz., strong quicklime in powder 1 oz., camphire also 

 powdered 9ij ; mix, and fill wide-mouth ounqe phials therewith : 

 to be kept carefully stopped. When used, mix with a little water, 

 and apply it quickly. 



Clothes poicder. Pipeclay lib. 8 oz., pip. alb., amyli, ana 1 oz., 

 rad. irid. Flor. 1 oz. 5iv, S. V. R. 2 oz. 



Clothes ball. Pipeclay 2lb., Fullers' earth, whiting, ana 4 oz., 

 pip. alb. 2 oz., fel bovis 4 oz. ; used for cleaning clothes. 



Breeches ball. Bath brick lib., pipeclay 2lb., pumice stone 

 powder 4 oz., ox gall 6 oz. ; they may be coloured with rose pink, 

 yellow ochre, umber, Irish slate, &c., to any desired shade. 



Essential salt of lemons. Crem. tart. 4 oz., sal. acetosellae 8 oz., 

 used to take iron moulds out of linen. 



Silvery boilinc/ poicder. White argol, common salt, alum, of each 

 lib. : plate boiled in water with a little of this powder acquires a 

 brilliant whiteness. 



Plate poioder. Hydrarg. c. cretse 1 oz., cretse pp. 4 oz. — 2. 

 Polisher's putty, corn. cerv. ust. ana 8 oz., whiting lib. 



Silvering powder. Silver dust gr. xv — xx, cream of tartar, com- 

 mon salt, ana 5ij, alum 5ss. — 2. Silver dust ^ss, common salt, sal 

 ammoniac, ana pj, corros. sublimate ^j ; make into a paste with 

 water : used to silver copper, which is to be cleaned by boiling 

 with argol and alum, then rub it with either of these powders, 

 and polish with soft leather. 



