498 Dr. BoUey on the Theory of Dyeing. 



the difFerent species of fibre were placed ou the same footing as 

 regards the strength and (as far as possible) as regards the quan- 

 tity of the diflPerent solutions and the duration of their operation. 

 The following Table contains a summary of the results of 

 thirty-seven experiments : — 



* In normal tartar there ought to be 35-6 potash to 100 anhydrous tartaric 



