The Chemistry of Cooking and Cleaning - A Manual for Housekeepers #270140

To understand something of the nature of these chemical substances and their common forms is a necessity for every housekeeper who would not be cheated of her money and her time. It is important for every one to remember that laws govern all chemical changes; for one is often asked to believe that some chemical sleight of hand can make one pound of washing-soda worth as much as two, and that some special preparation of flour will give a third more bread than any other.