The coffee plant is mostly found growing near the sides of mountains, valleys, and other sheltered situations, the soil of which has been gradually washed down from the surrounding heights, being that which forms its source of support. This is afforded by the decomposition of a species of claystone (slightly phosphoritic) which is found irregularly disposed in company with a few pieces of trap-rocks, amongst which, on approaching Sana from the southward, basalt is found to preponderate. The clay stone is only found in the more elevated districts, but the debris finds a ready way into the lower country by the numerous and steep gorges which are conspicuous in every direction. As it is thrown upon one side of the valley, it is carefully protected by means of stone walls, so as to present to the traveller the appearance of terraces. The plant requires a moist soil, though much rain does not appear necessary. It is always found in greater luxuriance at places where there is no spring. The tree at times looks languid, and half withered; an abundant supply of water to the root of the plant seems necessary for the full growth and perfection of its bean. _Progress of Cultivation in India_.--There are said to be ten varieties of the coffee, but only one is found indigenous to India, and it is questionable if this is not the Mocha species introduced from Arabia. The cultivation of this important crop is spreading fast throughout the east, and has been adopted in many parts of Hindostan. In the Tenasserim provinces, on the table land of Mysore, in Penang, and especially in the islands of Bourbon and Ceylon, it is becoming more and more an object of attention. It is known to have given good produce in Sangar and the Nerbudda; also in Mirzapore, as well as Dacca, and other parts of Bengal; Chota Najpore, Malabar, and Travancore. From three to four million pounds of coffee are now exported from the Indian presidencies annually. The highest quantity was four and a quarter million pounds in 1845, but the progress of culture, judging from the export, has been small. On the hilly districts on the east coast of the Gulf of Siam, the cultivation is carried on on a limited scale. The annual produce is not much more than about 400 cwt., although it is understood to be increasing. The quality of the berry is reckoned to be nearly equal to Mocha, and it commands a high price in the English market. The soil recommended in India is a good rich garden land, the situation high and not liable to inundation, and well sheltered to the north-west, or in such other direction as the prevailing storms are found to come from. A plantation, or a hill affording the shrubs shade, has been found beneficial in all tropical climates, because, if grown fully exposed to the sun, the berries have been found to be ripened prematurely.