Why does the housewife scald her preserved fruits to prevent their turning sour?
Because fermenting substances and fermenting action are destroyed by a boiling temperature.
Why do we keep preserves, beer, cider, or other substances liable to turn sour, in a cool place?
Because a depression of temperature arrests fermentation, though it does not prevent its renewal when the temperature in increased.
What is ether?
Ether is a product obtained by distilling strong alcohol and sulphuric acid. The product is called sulphuric ether, but it does not contain sulphuric acid, nor has it any sulphur in its composition.
What are the properties of ether?
It is an exceedingly volatile, inflammable body, producing insensibility when inhaled, and readily dissolving all fatty and oily bodies.
Why will ether remove spots of oil, paint, or grease from garments?