There are extensive coal fields in Luzon and Cebú, but it is mostly of a poor quality, known by the trade as lignite. It is used in coaling steamers, but not when long voyages are to be taken. Five thousand tons per month could be procured in Cebú alone, if carriage were provided; yet nearly all the coal used is imported from Australia. A few years ago an American vessel was wrecked on the coast of Mindoro. The captain and his men crossed to a port on the east coast, over the mountains, living for seventeen days in the woods on nuts. They reported great ledges of out-cropping coal in the hill-country, and that thousands of tons had broken off and fallen to the foot of the cliffs. The Spanish Government immediately confiscated the lands;--and that was the last of the matter. The coal field in Luzon lies in the southern part. A lead cropping out at Gatho is from ten to twenty feet in thickness. This has proved useful for steamboat service. The coal of Cebú was first discovered in 1827. It is found on the western slopes of the island, and seemingly extends under the straits, appearing again on the eastern slopes of the neighboring island, Negros. At least five beds have been opened, which vary in quality and thickness; but exploration has not been actively conducted. Once more: The Spanish masters of the island have done little to develop its mineral resources. It is therefore impossible to say how rich it may be in coal. The find reported by the American captain lies fallow, no effort having been made even to prove its truth or to test its value. It was in the mountainous interior, and, hence, would demand railroads and other public improvements for its working, and the Spanish find it more convenient to enjoy life lazily in Manila than to disturb their easy existence by any such activity. To those minerals mentioned I may add quicksilver, lead, sulphate, and vermilion. As yet, the veins of lead and quicksilver have yielded no results of value, and probably they possess none. But they have been discovered in many localities and may be found in others; possibly, too, of greater richness. Perhaps the iron of the Philippines offers the best opening for enterprise. As I have said, it occurs in many sections, and is of excellent quality, pure and rich, but it was actually worked a century ago with more energy than it is to-day. It is capable of yielding great results to an enterprising people. The Philippines fell like a rich jewel into the hands of Spain, but have been left by them in their uncut state. They remain like a rough diamond, needing only the work of the lapidary--America--to show to the world their full beauty and value. ANIMAL LIFE IN THE COLONY. The Useful Buffalo, and Other Domestic Animals.