This is the first soda compound we need mention. It is not of great value but can be used for digging into the soil in the winter at the rate of 2-3 oz. per sq. yd. Incidentally we may mention that it is an essential ingredient of Burgundy Mixture used for spraying potatoes. Its other use is one of a very different kind. Who has not heard of using washing soda or soda-ash with plenty of hot soapy water for cleaning glass of frames with ? As a dressing for onions it is of considerable value ; the crushed soda is used at the rate of 1-2 oz. per sq. yd. in wet weather during the growing season.
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