Gold: Dampier--Pigafetta--De Comyn--Placers in Luzon--Gapan--River Agno--The Igorrotes--Auriferous quartz from Antaniae--Capunga--Pangutantan--Goldpits at Suyuc--Atimonan--Paracale--Mambulao--Mount Labo--Surigao--River Siga--Gigaquil, Caninon-Binutong, and Cansostral Mountains--Misamis--Pighoulugan--Iponan--Pigtao--Dendritic gold from Misamis--Placer gold traded away surreptitiously--Cannot be taxed--Spanish mining laws--Pettifogging lawyers--Prospects for gold seekers. Copper: Native copper at Surigao and Torrijos (Mindoro)--Copper deposits at Mancayan worked by the Igorrotes--Spanish company--Insufficient data--Caution required. Iron: Rich ores found in the Cordillera of Luzon--Worked by natives--Some Europeans have attempted but failed--Red hematite in Cebú--Brown hematite in Paracale--Both red and brown in Capiz--Oxydized iron in Misamis--Magnetic iron in San Miguel de Mayumo--Possibilities. Coal (so called): Beds of lignite upheaved--Vertical seams at Sugud--Reason of failure--Analysis of Masbate lignite. Various Minerals: Galena--Red lead--Graphite--Quicksilver--Sulphur Asbestos--Yellow ochre--Kaolin, Marble--Plastic clays--Mineral waters. It is a great mistake to suppose that nothing is known of the geology and mineralogy of the Philippines, or that no attempts have been made to exploit them. The maps of the Archipelago are marked in dozens or hundreds of places, coal, copper, lead, iron, gold, and a number of works treating of the subject have been published. Amongst the authors are the mining engineers, Don Enrique Abella and Don José Centeno. But some of their most important reports are still in manuscript, for the revenues of the Philippines were almost entirely absorbed in paying the salaries of the officials, and there was a great disinclination to spend money in any other way. At the Philippine Exhibition, held at Madrid in 1887, more than seven hundred specimens of auriferous earths or sand, gold quartz, and ores of various metals were shown, and in this branch alone there were 109 exhibitors from all parts of the Archipelago. Besides ores there were the tools and utensils used by the miners, and models of the furnaces and forges in which the metals were reduced and worked, with the metals in different stages of concentration or manufacture, and a complete show of the finished products. A great many Mining Companies have been formed in Spain or in Manila at different times which have all failed from a variety of causes, want of skill, bad management, costly administration, or because the richness of the vein or seam had been exaggerated. The difficulty of getting labour is considerable, as mining is a work the generality of natives do not care to take up, although in some provinces they are used to it, for example, in Camarines Norte and in Surigao.