OLIVES.
These are natives of Asia, but have, beyond date, been extensively cultivated in Southern Europe. Olive-oil is an important article of commerce in most countries. Its use in all kinds of cookery, in countries where it flourishes, renders olives as important, to the mass of the people, as cows are in New England. It should be a staple product of the Southern states, to which it is eminently adapted. It is hardy further north than the orange. With protection, it may be cultivated, with the orange and lemon, all over the country. Olive-trees attain a greater age than any other fruit-tree. An Italian olive-plantation, near Terni, is believed to have stood since the days of Pliny. Once set out, the trees require very little attention, and they flourish well on the most rocky lands, that are utterly useless for any other purpose. Calcareous soils are most favorable to their growth. They are propagated by suckers, seeds, or by little eggs that grow on the main stalk, and are easily detached by a knife, and planted as potatoes or corn. Olives will bear at four or five years from the seed; they bear with great regularity, and yield fifteen or twenty pounds of oil per annum to each tree. There are several varieties. Plantations now growing at the South are very promising.