Water Glass

The eminent chemist, Dr. Grothie, is quoted as declaring that water glass has a great fntttre in store in bleaching, and that in nis opinión it will entirely displaco soda. Such substances as jute, whioh formerly could not be bleached without injury to the threads, are therefore capable of being quickly treated in the following manner: The yara is steeped f rom 15 to 20 minutes in a solution of from six to eight ponnds of water glass to a gallon of water, at a tempera ture of from 185 to 212 degrees F. , and turned abont in it a few times, then rinsed in hot, but not boiling water, and finally in cold. It next goes to a weak chlorine bath and will become perfectly white. Hemp and cotton, instead of being boiled in a strocg soda solution for six or eight honrs as a preliminary, can be quite sufficiently preparod by from 10 6o 15 minutes in the above hot water glass. For 100 pounds of linen yarn from 12 to 1 5 pounds of water glass are taken, costiug about 30 per cent leas than the usual ten pounds of 90 degréea soda. After the water glass bath the yarn is rinsed, first in hot, theii in cold water, and next given chlorine and acid as usual. All dressing is of course first reïnoved by boiling wifch milk of lime or by heating with water glass under pressure.