The pine-plant abounds both in the East and West Indies, and may be easily propagated from the crown; offsets from round the base of the fruit, which often amount to upwards of twenty in number; and from the young plants which spring from the parent stem; its cultivation requires but little care or expense, and is of such hardy growth, as to be almost independent of those casualties of weather, which often prove so detrimental to more delicate crops--it is one of those plants which Nature has scattered so profusely through tropical regions, whose leaves are thick and fleshy, to contain a large supply of nourishment, and covered by a thick, glazed cuticle; admitting of so little evaporation, that many of them will thrive upon a barren rock, where no other plant would live. Also from the large portion of oxalic acid which the leaves contain, no animal will touch them, and are, therefore, exempt from the trespasses of cattle, &c. Indeed no greater proof of the hardiness of the plant can be given, than the fact, that in many places where lands have been under tillage,--afterwards abandoned, and allowed to return to a state of nature, the pine-apple plant exhibits the only trace of former cultivation; every other cultivated plant has died away before the encroachments of the surrounding wood, while they alone remained increasing from year to year, and spread into large beds. Mr. Frederick Burt Zincke obtained a patent in England, bearing date December 9, 1836, for the following mode of preparing the filaments of this plant, the “_Bromelia ananas_.” We give the patentee’s own description (with slight emendations), as received from the patent office, London, and which is as follows.