The cultivation of the plant is very precarious, as it is liable to damage from a variety of causes; it will die if too much water collects round it, or if too little is given to it. It generally is grown on a dry soil, having a slight decline, to carry off the rain. To extract the dye from the plant, the usual process is to place it in large vessels containing lime and water, and then to bruise it with a wooden pestle; after which, when the water becomes still, the colouring matter will sink to the bottom of the vessel, when the water and the plants are drained off, and the matter, which by that time has acquired the consistency of paste, is exposed to the air to dry upon mats: as it becomes more dry it is divided by lines into small quadrangular pieces, and is broken up. To secure a good quality of indigo, great attention must be paid to the clearness of the water, and the proper mixture and quantity of the lime, as too much or too little is equally pernicious; also the time during which the bruising takes place, which, it appears, is a matter of very nice judgment, as it is usual to explain or account for the cause of the bad quality of a lot by saying that the planter has beat it for too long or too short a time, and that he did not know exactly when to stop. This article is very liable to adulteration, at which both native and Chinese dealers are so peculiarly expert, that purchasers trusting solely to their own knowledge are very liable to be deceived by them. The blues of the country are much brighter than any of the British or continental dyes, and are in consequence much preferred by the natives. _Cotton_.--Cotton is only grown in a very small quantity, principally in Ylocos and Batangas provinces. Some of it is sent to China, but the major part of the crop is used in the country. It is seldom or never well cleaned, the rude machines employed for doing so being usually worked by the hand or foot, very imperfectly and slowly, cleaning only a small quantity of the wool in a day. _Cocoa-nut oil_.--Cocoa-nut oil is made in the province of Laguna and in Bisayas. That coming from the Laguna is of the best quality, and generally sells for a good deal more than the Bisayas oil, which does not give so good a light, and has a worse smell than the other. The manufacturing processes employed in producing it are very rude in both of these districts, although that followed in Laguna is the better of the two; but both are bad. It has been proposed, however, to remedy this by establishing proper machinery at Manilla for carrying on its production on a large scale, as is done in Ceylon.