The common fruits are the date, orange, citron, fig, grape, apricot, peach and banana.
Among economic plants should be mentioned the coffee, cacao, citron, cinnamon, cocoanut and rubber tree.
The citron, sour orange, lemon and lime grow wild; but the apple and peach do not come to perfection.
Gum-producing and kola trees are abundant, and there are many fruit trees, the orange and citron growing well in the Susu and Futa Jallon districts.
Much of the neighbouring plain is very fertile, and the town is surrounded with gardens and orchards, in which orange, lemon and citron come to great perfection.
See Hipler, Literaturgeschichte des Bisthums Ermeland (Braunsberg, 1873); the Monumenta historiae Warmiensis (Mainz, 1860-1864, and Braunsberg, 1866-1872, 4 vols.); and Buchholz, Abriss einer Geschichte des Ermlands (Braunsberg, 1903.) 1 Emerka and Fridla (Beowulf, Quedlingburg Citron.), Aki and Etgard (Vilkina Saga).
The essential oil of tea is of a citron yellow colour; it is lighter than water and possesses the distinctive odour of tea.
The apple, pear, cherry and plum thrive well in the north; the orange, lemon, citron and sugar-cane in the south; styrax and mastic in the south-west; and the wheat lands of the Sivas vilayet can hardly be surpassed.
It was the Calamus aromaticus of the medieval druggists and perhaps of the ancients, though the latter has been referred by some to the Citron grass, Andropogon Nardus.
Jewish shekels were first coined by Simon the Hasmonean, probably in 139-138 B.C. These bear inscriptions in the archaic Hebrew and various emblems, such as the cup or chalice, the lily branch with three flowers, the candlestick, the citron and palm branch and so forth.
Certain of these oils consist very largely of hydrocarbons; for example, those of turpentine, citron, thyme, orange, pine-needle, goldenrod (from Solidago canadensis) and cypress, while others contain as their chief constituents various alcoholic and ketonic substances.
The process of expression is applicable to the obtaining of essential oils which are contained in the rind or skin of the fruits belonging to the citron family, such as orange and lemon oils.
Hundreds of acres of wheat are lost annually in America by the ravages of the Hessian fly; the fruit flies of Australia and South Africa cause much loss to orange and citron growers, often making it necessary to cover the trees in muslin tents for protection.