The islands have many beautiful harbors and, as we have seen, at Manila, Cebú and Iloílo extensive harbour improvements have already been made. There are no special difficulties attendant upon the loading or unloading of ships anywhere in the archipelago. The rapid extension of highways, and the construction of additional railways, are facilitating and cheapening land transportation. The natural resources of the country are unquestionably vast. I have already devoted a chapter to the discussion of the forests and their wealth. As to the mineral resources, while we have much still to learn we already know that there are excellent lignite, some coking coal and extensive deposits of high-grade iron ore and of copper. One flourishing gold mine is now giving handsome returns, and several others seem to lack only the capital needed to develop them on a considerable scale in order to make them pay; dredges are operating for gold with great success in the vicinity of Paracale in eastern Luzón, and there are other gold placer fields in the islands which are worthy of careful investigation. The prospect of obtaining in quantity a high-grade petroleum with paraffine base rich in low-boiling constituents is very good. Difficulties in the way of the development of the mining industry are to be found in the disturbances of geological formations which are inevitably met with in volcanic countries, in the dense tropical vegetation which in many regions covers everything and renders prospecting difficult, and in the unevenness of the rainfall which in some parts of the archipelago results in severe floods at one season and in the lack of sufficient water to furnish hydraulic power at another. But we are at least free from the troubles incident to freezing cold, and in my opinion a prosperous mining industry will ultimately be built up in the Philippines. Agriculture has always been, and will doubtless long continue to be, the main source of wealth. In the lowlands may be found conditions of soil and climate favourable to the growing of all important tropical products. Owing to the position of the islands with reference to the northeast and southwest monsoons, practically any desired conditions as regard humidity and the distribution of rainfall can be found. There are regions which have strongly marked wet and dry seasons, and regions in which the rainfall is quite uniformly distributed throughout the year. In some provinces the heaviest rains come in January, while in others they come in July or August. The Philippine Weather Bureau has gathered an immense amount of very valuable rainfall statistics and is constantly adding to its present store of knowledge. Father José Algué, its distinguished director, can always be depended upon to furnish any obtainable information.