102 SEWING SILK AND TWIST. 



a sieve into a tub ; let the other half, or eight buckets 

 of the same, remain in the kettle for further use ; put 

 into the liquor in the tub, a quarter of a pound of alum, 

 which has previously been dissolved in some vessel; 

 stir the whole well, steep the light blue silk in it, and 

 work it well in the liquur a quarter of an hour ; then 

 take it out, wring it, and keep it, in its wet state, for 

 further use, and throw out the liquor as useless. 



" Lastly : pour into another vat the remaining eight 

 buckets of the logwood liquor left in the kettle, alter 

 having first run it through Ji soive ; steep the silk in 

 the liquor, and work it well therein for tho space of 

 half an hour : then take it out, rinse it in running wa- 

 ter, wring and dry it. By the above process, you 

 will obtain a dark blue, in every respect equal to 

 any of the blues which have been colored by means 

 of the keep. 



" The above blue is likewise applicable to the dye- 

 ing of any other goods ; and not alone in this respect, 

 is it of advantage, but k likcwisa saves you the trouble 

 and expense of preparing a kcop for dyeing a small 

 quantity of silk to a dark blue ; and if the risk of 

 missing a keep, and the consequent loss thereof be 

 taken into consideration, the above receipt is of con- 

 siderable advantage to the dyer as well as to the man- 

 ufacturer; particularly as the smallest quantity may 

 be colored, equal to the coloring of a keep, by redu- 

 cing the ingredients in proportion to the quantity of 

 the silk, which is to be dyed." 



PRODUCT OF THE SILK WORM. 



Various estimates have been made of the silk pro- 

 duced by a given number of worms ; but it depends 

 essentially upon the amount and quality of the food 



