notions necessary for the separation of the component parts which enter into the combination of minerals, and much less for the construction of furnaces suitable to the smelting and formation of the moulds, it is concluded they must have found some vein of copper entirely pure, which, without the necessity of any other preparation, they have been able to flatten with the hammer and rendered maleable, so as to convert it into the rough vessels above spoken of.

[Cinnabar.] The district-magistrate of Caraga, Don Augustin de Ioldi, received a special commission from the government to explore and obtain information respecting a mine of cinnabar, which was said to be situated under his jurisdiction; and I have been informed of another of the same species in the Island of Samar, the working of which has ceased for a considerable time, not because the prospect was unfavorable, but for the want of an intelligent person to superintend and carry on the operations.  The utility of such a discovery is too obvious not to deserve, on the part of government, the most serious attention and every encouragement to render it available; and it is to be hoped that, as the first steps have already been taken in this important disclosure, the enterprise will not be abandoned, but, on the contrary, that exertions will be made to obtain aid and advice from the Miners’ College of Mexico, as the best means of removing doubt, and acting with judgment in the affair.

[Iron.] Iron in mineral form is to be found at various points on Luzon, and those engaged in working it, without the necessity of digging; collect the iron-bearing stones that constitute the upper stratum, these, when placed in fusion, generally yield about forty per cent clear metal.  This is the case in the mountains of Angat, situated in the Province of Bulacan, and also in the vicinity of the Baliwag River.  In Morong, however, belonging to the Province of La Laguna, where the cannon-ball factory is established, the ore yields under twenty-two per cent.  Its quality is in general better than the Biscayan iron, according to formal experiments and a report, made in 1798 to Governor Don Rafael Maria de Aguilar, by two Biscayan master-smiths from the squadron of Admiral Alava.  Witnesses to this test were the Count de Aviles and Don Felix de la Rosa, proprietors of the mines of Morong and Angat, and the factor of the Philippine Company, Don Juan Francisco Urroroz.  Notwithstanding its advantages, this interesting branch of industry has not yet passed beyond the most rude principles and imperfect practice, owing to the want of correct information as to the best process, and scarcity of funds on the part of the proprietors to carry on their works.  Without the aid of rolling or slitting mills, indeed unprovided with the most essential instruments, they have hitherto confined themselves to converting their iron into plow shares, bolos, hoes, and such other agricultural implements; leaving the Chinese of Amoy in quiet possession of the advantages of being allowed to market annual supplies of all kinds of nails, the boilers used on the sugar plantations, pots and pans, as well as other articles in this line, which might easily be manufactured in the Islands.