| Meteorology - 1828 - 888 pages
...white. Of this acid bleaching liquor small quantities at a time are to be added to the half bleached lac solution, allowing the effervescence which takes...fresh portion is poured in. This is to be continued till the lac, now white, separates from the liquor. The supernatant fluid is now to be poured away,... | |
| Gill's scientific, technological and microscopic repository - 1828 - 436 pages
...will be found Professor Hare's, of Philadelphia, method of effecting this important object. lowing the effervescence which takes place on each addition...fresh portion is poured in. This is to be continued till the lac, now white, separates from the liquor. The supernatant fluid is now to be poured away,... | |
| Luke Hebert - Industrial arts - 1835 - 938 pages
...white. Of this acid bleaching liquor, small quantities at a time are to be added to the half bleached lac solution, allowing the effervescence, which takes...and finally wrung as dry as possible in a cloth. The Ine obtained in the foregoing process ¡9 to be dissolved in a pint of alcohol, more or less, according... | |
| Luke Hebert - Industrial arts - 1846 - 944 pages
...white. Of this acid bleaching liquor, small quantities at a time are to be added to the half bleached lac solution, allowing the effervescence, which takes...a cloth. The lac obtained in the foregoing process ia to be dissolved in a pint of alcohol. more or less, according to the required strength of the varnish... | |
| Chemistry - 1864 - 348 pages
...added, made by diluting muriatic acid with thrice its bulk of water, and dropping into it pulverised red lead till the last added portions do not become...liquor. The supernatant fluid is now to be poured away, the lac well washed in repeated waters, and finally wrung as dry as possible in a cloth. The lac obtained... | |
| Franklin Institute (Philadelphia, Pa.) - Electronic journals - 1864 - 526 pages
...solution of lac, and stir the whole well together. Effervescence takes place. When this ceases add more of the bleaching liquor, and thus proceed till the color...liquor. The supernatant fluid is now to be poured away, the lac well washed in repeated waters, and finally wrung as dry as possible in a cloth. The lac obtained... | |
| Pharmacy - 1865 - 786 pages
...white. Of this acid bleaching liquor smnll quantities at a timo are to be added to the hnlf-bleached lac solution, allowing the effervescence which takes...liquor. The supernatant fluid is now to be poured away, the lue well washed in repented waters, and finally wrung as dry as jwssible in a cloth. The lae obtained... | |
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