Swiss Chard, once not even considered either herb or vegetable, but a weed, is now almost as great a favorite as broccoli. Its contents per 1,000 parts are: 62.70 Sodium, 44.92 Potassium, 21.69 Calcium, 19.39 Phosphorus, besides other elements just as valuable though less in quantity.
THOMSONIAN SYSTEM
Celery is possibly one of the most universally appreciated vegetables. Not so long ago it was considered an herb, splendid as a tea for the nervous. Celery, like the tomato and the apple, has developed from a favorite medicine into a food. Its contents are: 65.24 Sodium, 48.60 Potassium, 14.90 Calcium, 14.49 Phosphorus, and other elements, among which is Chlorine 17.80. Only one other vegetable is richer in this element. Tomatoes contain 18.00 parts per 1,000.
Rhubarb is another vegetable that until recently was considered a medicine of value in constipation. Gradually it was accepted as good material for delicious pies, then as an appetizing sauce, and finally, splendid for the making of wine. Its contents are: 74.50 Potassium, 12.55 Calcium, 18.41 Phosphorus, 6.80 Chlorine, and other valued elements.
Lettuce, formerly good food for cattle and chickens, is now a universal favorite and is preparable in many forms. Its contents are 74.50 Potassium, 26.56 Calcium, 14.63 Silicon, 13.82 Chlorine, and other valued elements.
Beets once were cattle food, but due to their appearance and appeal to the appetite, gradually found their way to the table as food for man also. Their contents are: 38.70 Potassium, 9.00 Chlorine, 9.00 Sodium, and other elements.
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