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The dehydrating agents rapidly lose their efficiency on exposure to the air. It is often necessary in quantitative analysis to employ fluxes to bring into solution substances which are not dissolved by acids. The fluxes in most common use are sodium carbonate and sodium or potassium acid sulphate.
She secured permission to have the sound and unsound fruits and vegetables separated and with a large committee of women saved the food for consumption by the community by dehydrating and other preserving processes. This was not as mother used to do. Mother's ways are being investigated and discarded the whole world round.
Drying, or dehydrating, has long been known for beans, peas, and corn, and for dates, prunes, figs, and raisins. But dried potatoes, beets, carrots, and "soup mixtures" are more or less new. The drying, of course, merely removes most of the water from the vegetable, and if the process is properly carried out, soaking the vegetable in water restores its original freshness.
In those homes are the women working such short hours that they can, without dropping important obligations, take over preserving, canning, dehydrating, the making of bread, soap, and butter substitute? Has the tenement-house dweller accommodation suitable for introducing these industrial processes into her home?
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