The beans in common use are mostly English, Egyptian,, and Konigsberg. English are generally preferred, and usually command a higher price, but both Konigsberg and Egyptians are very extensively used, and so long as they are clean and dry it is very doubtful in practice whether any difference can be recognized in their feeding value. Old English beans are preferred to new, because they are generally harder and drier, but many people prefer new Egyptian to old, because they are less damaged by weevils, and they are as hard as the old in con-sequence of the washing and drying they undergo. Whatever kind is used they should be thoroughly dry, sound, and clean.
Beans are much too rich in nitrogenous constituents to be used alone, but they are most valuable in combination, and are the usual means whereby the albuminoid ratio of foods deficient in nitrogenous matter is raised.
Pease are frequently used instead of beans. They possess a somewhat similar composition, but in using them great care should be observed to see they are thoroughly dry, otherwise they are liable to produce flatulent colic. When sound, hard, and dry, either English, Canadian, or Australian may be used with every confidence.
Indian pease are frequently mixed with the Indian vetch, or Lathyrus sativa, which possesses marked poisonous properties, and should never be incorporated with food.
Many deaths have been caused by its use, and many horses that do not succumb to its effects are rendered permanently useless by becoming very bad roarers.