towards the end of boiling, or by means of sugar and nutmeg. Because animals of speed use up, by the lungs, much heat-forming material, Oats (which abound in carbonaceous constituents) are specially suitable as food for the horse. ONION (_see_ Garlic, _page 209_). ORANGE. Though not of native British growth, except by way of a luxury in the gardens of the wealthy, yet the Orange [400] is of such common use amongst all classes of our people as a dietetic fruit, when of the sweet China sort, and for tonic medicinal purposes when of the bitter Seville kind, that some consideration may be fairly accorded to it as a Curative Simple in these pages. The _Citrus aurantium_, or popular Orange, came originally from India, and got its distinctive title of _Aurantium_, either (_ab aureo colore corticis_) from the golden colour of its peel, or (_ab oppido Achoeioe Arantium_) from Arantium, a town of Achaia. It now comes to us chiefly from Portugal and Spain. This fruit is essentially a product of cultivation extending over many years. It began in Hindustan as a small bitter berry with seeds; then about the eighth century it was imported into Persia, though held somewhat accursed. During the tenth century it bore the name "Bigarade," and became better known. But not until the sixteenth century was it freely grown by the Spaniards, and brought into Mexico. Even at that time the legend still prevailed that whoever partook of the luscious juice was compelled to embrace the faith of the prophet. Spenser and Milton tell of the orange as the veritable golden apple presented by Jupiter to Juno on the day of their nuptials: and hence perhaps arose its more modern association with marriage rites. Of the varieties the China Orange is the most juicy, being now grown in the South of Europe; whilst the St. Michael Orange (a descendant of the China sort, first produced in Syria), is now got abundantly from the Azores, whence it derives its name. John Evelyn says the first China Orange which appeared in Europe, was sent as a present to the old Conde Mellor; then Prime Minister to the King of Portugal, when only one plant escaped sound and useful [401] of the whole case which reached Lisbon, and this became the parent of all the Orange trees cultivated by our gardeners, though not without greatly degenerating. The Seville Orange is that which contains the medicinal properties, more especially in its leaves, flowers, and fruit, though the China sort possesses the same virtues in a minor degree. The leaves and the flowers have been esteemed as beneficial against epilepsy, and other convulsive disorders; and a tea is infused from the former for hysterical sufferers.