The amount and rapidity of produce of this plant probably exceed that of any other in the known world. In eight or nine months after the sucker has been planted, clusters of fruit are formed; and in about two months more they may be gathered. The stem is then cut down, and a fresh plant, about two-thirds of the height of the parent stem, succeeds, and bears fruit in about three months more. The only care necessary is to dig once or twice a year round the roots. According to our author, on 1,076 square feet, from 30 to 40 banana trees may be planted in Mexico, which will yield in the space of the year 4,414 lbs. avoirdupois of fruit; while the same space would yield only 33 lbs. avoirdupois of wheat, and 99 of potatoes. The immediate effect of this facility of supplying the wants of nature is, that the man who can, by labouring two days in the week, maintain himself and family, will devote the remaining five to idleness or dissipation. The same regions that produce the banana, also yield the two species of manioc, the bitter and the sweet: both of which appear to have been cultivated before the conquest.--_Foreign Quarterly Review._ * * * * * INDIAN CORN. The most valuable article in South American agriculture, is unquestionably the maize, or Indian corn, which is cultivated with nearly uniform success in every part of the republic. It appears to be a true American grain, notwithstanding many crude conjectures to the contrary. Sometimes it has been known to yield, in hot and humid regions, 800 fold; fertile lands return from 300 to 400; and a return of 130 to 150 fold is considered bad--the least fertile soils giving 60 to 80. The maize forms the great bulk of food of the inhabitants, as well as of the domestic animals; hence the dreadful consequences of a failure of this crop. It is eaten either in the form of unfermented bread or _tortillas_ (a sort of bannock, as it is called in Scotland;) and, reduced to flour, is mingled with water, forming either _atolle_ or various kinds of _chicha_. Maize will yield, in very favourable situations, two or three crops per year; though it is but seldom that more than one is gathered. The introduction of wheat is said to have been owing to the accidental discovery, by a negro slave of Cortez, of three or four grains, among some rice which had been issued to the soldiers. About the year 1530, these grains were sown; and from this insignificant source has flowed all the enormous produce of the upper lands of Mexico. Water is the only element necessary to ensure success to the Mexican wheat grower; but it is very difficult to attain this--and irrigation affords the most steady supply. _Ibid._ * * * * * THE AGAVE AMERICANA.