as ObjeSfs of the Art af Dyingy ^c. 38^ 



It up for a fufficienc time, and the galls will not 

 fettle if it be too violent. The liquor is to be 

 carried to the wringing tub, in the quantity of 

 three or four gallons at a time, .according as it 

 is foaked up by the cotton, till one half of it has 

 been thus employed. And the cotton is to be 

 worked in it, as hot as poflible, by means of i 

 flick pafTed through the Ikains. After this, it is 

 to be dried either wholly, or in part, in the 

 open air. If it cannot be thus completed, for 

 rain would in this ftate, and efpecially as the 

 cotton approaches to drynefs, be highly pre- 

 judicial, the drying muft be finifhed in a ftove. 

 The liquor which ha''> been wrung out is to ht 

 added to the remaining half in the copper. 



For the tenth operation, this remaining de- 

 coftion of galls is to be heated, the thick fedi- 

 ment at the bottom being previoufly feparated 

 by a hair fieve, and the cotton again treated as 

 in tne ninth operation. 



The eleventh operation is the alumingof the 

 cotton. Thirty pounds of Roman alum, finely 

 powdered is put into fixteen gallons of water, 

 gradually heated, and continually ftirred.- As 

 loon as it becomes fo hot that the operator can 

 eafily bear his hand in it, the fire is to be 

 removed. Six gallons of the firft barilla liquor 

 are, then, to be added, by degrees, and the 

 whole agitated till the folution is complete^ 

 Vol. hi. C c The 



