This section is from the book "Scientific Feeding", by Mrs. Dora C. C. L. Roper. Also available from Amazon: Scientific feeding.
They are rich in iron and should be used freely in cold weather. Boiled onions are a good addition, in place of fat meat.
Green peas differ from other green vegetables. They are richer in protein and can serve as a meat substitute during the summer. String-beans resemble the green leaf vegetables in their composition, but do not contain sufficient protein to serve as a meat substitute. They are very purifying to the liver and intestines, and should be eaten freely by people of a bilious temperament.
Cabbage is rich in minerals. It can. be made very indigestible by careless preparation. Raw cabbage is easily digested if chopped very fine and mixed with grated potato and mayonnaise dressing. Cooked cabbage should be treated with acid and mixed with the yolk of an egg if it disagrees. Some people prefer sprouts to cabbage. They resemble each other very much in composition. Cabbage contains more water and cellulose. It is best to use only the innermost part of cabbage, if it disagrees.
This belongs to the cabbage family. It is rich in sulphur and is one of the most easily digested vegetables, if properly prepared. If it disagrees, treat it with acid or serve it for breakfast instead of for dinner.
Celery contains valuable minerals and is soothing to the nervous system. Celery roots are rich in fat and a healing food for people with kidney, liver, and intestinal trouble. The green stalks of celery root should never be thrown away. They can be tied into a bunch and cooked with soups of meat or legumes. Celery is a very valuable food for people with a bilious temperament.
This is an easily digested vegetable and resembles celery. As a food for medicinal purposes it may be eaten raw or cooked.
They resemble each other, carrots being richer in sugar; the parsnip contains a little gluten. They may be eaten in the raw state with good effect.
Turnips contain some valuable minerals, but being rich in sugar and water, they are liable to ferment in weak stomachs, especially if eaten with lean meats, white breads or other foods, which are poor in fat. They should not be eaten in the middle of the day by people who do active work. If they disagree at night, they may be eaten for breakfast in combination with fat meats or stale bread and butter. Yellow turnips are richer in nutriment than white turnips. Raw turnips are wholesome if they agree. Never combine turnips with other starchy foods at the same meal, such as potatoes, rice, white flour preparations, apples or cucumbers.
Green corn is rich in fat and protein, and can form a perfect meal during the summer if combined with tomatoes. Do not cook the corn if it is agreeable raw. Canned corn should be used with care for people with intestinal weaknesses. If used for soups it should be strained and diluted with an equal amount of hot water before thickening.
 
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