The probable expense of cultivation per acre may be as under:—­

L s. d. 
Rent 0 10 0
Labor, 12 months 52 0 0
Ditto, 2 months 8 10 0
Ploughing three times 2 2 0
Harrowing twice 1 0 0
Manure, say 2 10 0
Seed, say 0 10 0
----------
L67 2 0

The Sydney average quantity is said to be 11-1/3 cwt. per acre, say 10 cwt.; and the cost price per lb. will be 141/2d., or L6 15s. 4d. per cwt.  The profit will at once be seen on this article of consumption.

* * * * *

Miscellaneous Drugs.—­The blood tree (Croton gossypifolia), an evergreen shrub, native of the Trinidad mountains, is remarkable for yielding, when wounded, a thick juice resembling blood in color, which is one of the most powerful astringents I know of, and as such would be valuable to medical science.  The bark of Croton Cascarilla is, as we have seen in a former section, aromatic, and the seeds of C.  Tiglium, the physic nut, are purgative; so are those of the purging nut (Jatropha multifida), and another species (J. gossypifolia).

The pods of cow-itch (Mucuna pruriens) act as a vermifuge; the roots of the Ruellia tuberosa, or manyroot, and the bulbs of the white lily (Pancratium Carribaeum and maritimum), are emetic.  The Indian root or bastard ipecacuan (Asclepias curassavica) has medicinal properties. A. tuberosa is used as a mild cathartic, and a remedy for a variety of disorders. Hydrastis canadensis, or Canadian yellow root, is a valuable bitter, and furnishes a useful yellow dye. Knowltonia vesicatoria is used commonly as a blister in the Cape Colony. Ranunculus saleratus (the R. indicus of Roxburgh, and B. camosus of Wallich), common in India, is also used by the natives for blistering purposes.

A kind of sedge rush, common in swampy places in the West India islands, the Adme cyperus, enjoys a reputation for the cure of yellow fever.  It is also stated to be cordial, diuretic and cephalic, serviceable in the first stages of the dropsy, good in vomitings, fluxes, &c.

Dr. Impey, the residentiary surgeon of Malwa, has just confidence in the indigenous drugs in use by the natives of the East, many of which are quite unknown in European practice.  He believes that, in the Indian bazaars and the jungle, drugs having precisely the same effect as those of Europe may be discovered, and has recently drawn up a list of ninety substances, which are perfect substitutes for an equal number of European medicines.  The class of tonics, in particular, is most amply supplied, and the Englishman is not the only animal who suffers from disorders of the digestive organs.