II
Before putting “vegetalism” into practice the first point is to know whether the foods of “vegetal” origin contain, and are susceptible of producing regularly, the divers nutritive principles indispensable to the organisation of an alimentary diet. The principles are the following:—Proteid or albuminoid substances; hydrocarbonated and sweet substances fatty substances; mineral matters, alkalis, lime, magnesia, phosphates and chlorides, etc. In most compound foods, no matter of what origin, mineral materials almost always exist in sufficient quantities. The most important amongst them, at all events, are found combined in liberal, even superabundant, portions in dishes of vegetal origin. The analysis of the ashes of our most common table vegetables fixes us immediately to this subject: Leguminous plants supply from about three to six per cent. of ashes, rich in alkalis, lime and phosphates. Potatoes, green vegetables and fruit as a whole absorbing considerable quantities of mineral elements. These are the elements of a nature to allow a precise reply to this question which we propose to expound briefly.