14 MR. TOPPAN'S NEW PROCESS FOR SCOURING WOOL. 



The general advantages of Mr. Toppan's method of scour- 

 ing wool are the following : saving of time in scouring ; saving 

 of strength of fibre through less heat ; the wool is cleansed 

 it is made really white ; the white is permanent ; there is 

 less loss of wool through shrinkage ; the wool is mordanted 

 for many colors, and the cost of mordant and time of opera- 

 tion are saved ; the dyes seem to take more quickly and evenly ; 

 there is probably a considerable saving of dye ; the colors 

 are permanent ; in spinning, less oil is needed ; there is less 

 waste in carding ; there is less gumming up of cards ; there- is 

 less waste in spinning ; the wool will spin from one to one 

 and a half runs finer. 



In closing the lecture, and before proceeding to the practi- 

 cal work of scouring, I desire to call your attention to the 

 fibres and fabrics which have been brought here for your exam- 

 ination. There are some of the results of the cotton bleach ; 

 there are some fibres, flax, and hemp ; there are several 

 different grades of wool in the grease, scoured by the Toppan 

 method, and whenever it was possible to get the same thing 

 precisely, scoured by other regular scourers for the trade ; 

 there are two large triple sets of wool and several smaller 

 ones; the Guild samples; flannels, made by Damon, which 

 he said were whiter than the usual ones were, after sulphur- 

 ing ; woolen cloths, woven in 1878; wool dyed by Barrett, 

 and also with household dyes ; and many other things. 



Thanking you for your kind attention to the written portion 

 of the lecture, I invite you for a while to the scouring-room, 

 and dyehouse which have been improvised here this evening. 



