Nitrogen 8 1/4 Potash 17 Phosphoric acid 3 Reducing this to crop and area, and taking 60 fruits per annum per tree as a fair mean for the bearing groves in our cocoanut districts and on those rare estates where a systematic spacing of about 173 trees to the hectare has been made, we should have an annual harvest of 10,300 nuts, or, stated in round numbers, 10,000, which will exhaust each year from the soil a total of-- Pounds. Nitrogen 82 1/2 Potash 170 Phosphoric acid 30 The cocoanut, therefore, while a good feeder, may not be classed with the most depleting of field crops. To make this clear I exhibit, by way of contrast, the drafts made by a relatively good crop of two notoriously soil-impoverishing crops--tobacco and corn--and, on the other hand, the drafts made by an equivalent average cotton crop--a product considered to make but light drains upon sources of soil fertility. A proportionate tobacco crop of 1,000 kilos per hectare will withdraw from the soil (reduced to the same standard of weights adopted by Mr. Cochran)-- Pounds. Nitrogen 168 Potash 213 Phosphoric acid 23 An equivalent crop of shelled corn, say, of 125 bushels per hectare, will withdraw-- Pounds. Nitrogen 200 Potash 135 Phosphoric acid 75 while a relative crop of lint cotton of 237 kilos (700 pounds) per hectare [6] will only exhaust, in round numbers-- Pounds. Nitrogen 114 Potash 70 Phosphoric acid 30 There is an analogy between these four products that makes them all comparable, in so far as all are largely surface feeders, and, as experience shows that there can be no continuing success with the last three that does not include both cultivation and manuring, we may use the analogy to infer a like indispensable necessity for the successful issue of the first. Cultivation as a manurial factor should, therefore, not be overlooked, and all the more strongly does it become emphasized by the very difficulties that for some years to come must beset the Philippine planter in the way of procuring direct manures. When it comes to the specific application of manures and how to make the most of our resources, we shall have to turn back to the analysis of the nut and note that, relatively to other crops, it makes small demands for nitrogen. At the same time it must not be forgotten that these chemical determinations only refer to the fruit and that, with the present incomplete data and lack of investigation of the constituent parts of root, stem, leaf, and branch, we have nothing to guide us but what we may infer from the behavior of the plant and its relationship to plants of long-deferred fruition, whose manurial wants are well understood.