There are few, perhaps no agricultural or horticultural pursuits, so delightful (observes Mr. Joseph, in his "History of Trinidad,") as that of the cultivation of the cacao. It is planted in rows, intersecting each other at right angles, at the distance of from twelve to fifteen feet, according to the nature of the soil. The tree is not suffered to grow higher than about fifteen feet, and its broad rich foliage, the hues of which vary from a light green to a dark red, loaded with yellow and dark red pods, which contain the chocolate bean, are beautiful objects; these alleys are shaded by rows of magnificent trees, called _Bois Immortel_ by the French and English, by the Spaniards the Madre de Cacao. It is the _Erythrina umbrosa_ or _arborea_ of Linnæus. Like the Bignonia or Pouie, this tree, at particular seasons, throws off its foliage and is covered with blossoms; those of the Erythrina are of a brilliant red color, justifying its Greek appellation. In this state they are literally dazzling to behold--no object in the vegetable world looks more striking than the alleys of a cacao walk shaded by a forest above them of the Bois Immortel. I have been obligingly furnished by Mr. W. Purdie, the able Government botanist of Trinidad, with a short essay upon the cultivation of the cacao tree, with which many of the valleys of that island are so beautifully adorned, and which, at one time, poured into that now unfortunate colony so large a stream of wealth. Fortunately the cacao planter of the island has managed to survive the many years of depression under which--like sugar now--the cacao cultivations lingered and sunk, and which brought the once wealthy planter down to poverty and misery. His prospects, however, are gradually improving. The opinions put forth by Mr. Purdie, on the subject of which he treats, will be found to run counter to the long-established practice hitherto pursued in the treatment of cacao plantations; but it must not be forgotten that these are the opinions of a person with whom the study of trees, their physiology and functions, has been not merely an amusing science, but an adopted employment, and whose acquirements in this respect, previous to his arrival in the colony, recommended him for selection as the agent to extend through South America (the great cacao region) the investigations of one of the most noted botanical gardens in Europe. Mr. Purdie says:--