FOK SCOURING WOOL. 



about two minutes, gave a result in clean wool of sgj^ 

 per Cent. These tests were made with especial care to 

 get an average of the fleece for each style of scour, to 

 give the soda scour 130° to 135° -of heat, giving each 

 about the same amount of liquor per pound of wool ; and giv- 

 ing the Toppan process from 120° to 130° of heat, the average 

 being 120°, which was found to give most satisfactory results. 

 In every case, after the two and a half minute or five minute 

 scour bythe Toppan process. the yellowbuck fleece came out 

 far handsomer and cleaner than by the soda scour, even at 

 thirty minutes. The yellow tinge was also bleached out, 

 which was not the case when cleaned with soda." 



The old scour yielded about 30 per cent clean wool. 

 The Toppan yielded less than 40 per cent clean wool, an 

 increase of not fnr fmm ,^^.0 fu;^^i :- ■^-- 



,hing 

 ;ent ; 

 irink 



California Academy of Sciences 



Presented by-^I^^^ Tn ^titutg - 



'D_^^iinnhsir 22 , 190-ü 



53f 

 gave 



per 

 over 



also 

 tate- 

 how 



nan- 

 mce 



5m. 130" Very clean and white. 



2m. 135° Extremely clean and white. 



ijm. 123° Handsomer than 20m. soda scour. 



lom. 100° Handsomer than 20m. soda scour. 



Time. 



2jm. 

 5m. 



Heat. 



135° 



o 

 130 



111° 



o 



100 



4^m. 

 15m. 



ESSEX INST. BULLETIN, VOL. XVII 



YELLOW BÜCK FLEECE. 

 Result. 



Very handsome. 

 Very handsome. 

 Good. 

 Handsome. 



