Peas and Beans contain sulphur, and are richer in mineral salts, such as potash and lime, than wheat, barley, or oats; but their constituents are apt to provoke indigestion, whilst engendering flatulence through sulphuretted hydrogen. They best suit persons who take plenty of out-door exercise, but not those of sedentary habits. The skins of parched Peas remain undigested when eaten cooked, and are found in the excrements. These leguminous plants are less easily assimilated than light animal food by persons who are not robust, or laboriously employed, though vegetarians assert to the contrary. Lord Tennyson wrote to such effect as the result of his personal experience (in his dedication of _Tiresias_ to E. Fitzgerald):-- "Who live on meal, and milk, and grass:-- And once for ten long weeks I tried Your table of Pythagoras, And seem'd at first 'a thing enskied' (As Shakespeare has it)--airylight, To float above the ways of men: Then fell from that half spiritual height, Until I tasted flesh again. One night when earth was winter black, And all the heavens were flashed in frost, And on me--half asleep--came back That wholesome heat the blood had lost." But none the less does a simple diet foster spirituality of mind. "In milk"--says one of the oldest Vedas--"the finer part of the curds, when shaken, rises and becomes butter. Just so, my child, the finer part of food rises when it is eaten, and becomes mind." Old Fuller relates "In a general dearth all over [418] England (1555), plenty of Pease did grow on the seashore, near Dunwich (Suffolk), never set or sown by human industry; which being gathered in full ripeness much abated the high prices in the markets, and preserved many hungry families from famishing." "They do not grow", says he, "among the bare stones, neither did they owe their original to shipwrecks, or Pease cast out of ships." The Sea-side Pea (_pisum maritimum_) is a rare plant. PEACH. The Peach (_Amygdabus Persica_), the apple of Persia, began to be cultivated in England about 1562, or perhaps before then. Columella tells of this fatal gift conveyed treacherously to Egypt in the first century:-- "Apples, which most barbarous Persia sent, With native poison armed." The Peach tree is so well known by its general characteristics as not to need any particular description. Its young branches, flowers, and seeds, after maceration in water, yield a volatile oil which is chemically identical with that of the bitter almond. The flowers are laxative, and have been used instead of manna. When distilled, they furnish a white liquor which communicates a flavour resembling the kernels of fruits. An infusion made from one drachm of the dried flowers, or from half an ounce of the fresh flowers, has a purgative effect. The fruit is wholesome, and seldom disagrees if eaten when ripe and sound. Its quantity of sugar is only small, but the skin is indigestible.