as Obje5is of the Art of 'Dyings &c. 387 



can be procured it to be ftirred into it. When 

 the liquor is fo vvarm that the workman can juft 

 bear his hand in it, one fourth part of the 

 cotton is to be put into it, fufpended on fticks ; 

 by means of which it is moved backwards 

 and forwards in the pan, every five minutes ; 

 and the Ikains are to be inverted every ten 

 minutes, fo that they may receive the dye 

 equally in every part. This bufinefs is conti- 

 nued for about fifty minutes. The cotton is 

 then hung on five fticks only, and fo fufpended 

 by firings as to be wholly immerfed in the 

 liquor, which is now made to boil, and con- 

 tinued boiling for forty-five, or fifty minutes. 

 A white froth, which about this time appears on 

 the furface is a fign that the madder is exhaufted 

 of its colouring matter, and that the cotton can 

 receive no benefit, though it will get no injury 

 from continuing longer in the liquor. It is 

 then to be withdrawn, carried to be well wafhed 

 in the river, or wafh-wheel, and then wrung and 

 dryed. 



The other three fourths of the cotton, are then 

 to be fuccefllvely dyed in the fame manner, frefii 

 ingredients being ufed for each parcel. 



The fourteenth operation is reprefented as 

 highly eflential to the fuccefs of the procefs. 

 Should it be omitted, the colour, it is faid, 

 would not only be fo unfixed, as to lofe much in 

 the fubfequent operation, but would likewife 

 C c 2 .requir!^ 



