The question then remains as to the character, amount, and form of this commerce, which are three principal topics. As for the character of this commerce, it is noted in the larger memorial (no. 15) that the islands have a domestic and a foreign commerce. It has been shown that this is scanty, except what proceeds from Moluco; but that this might be very rich, since it is the trade in cloves (as may be seen in nos. 28, 30, 34, and 36 of the said memorial). But, as this trade is reserved for the Portuguese and prohibited to the Castilians, it is useless to consider it for this purpose--although it is worth notice that whatever advantage the crown of Portugal derives from that trade is due to the Philipinas, and results from their preservation. I shall soon make some observations on the remaining portion of this domestic commerce, and what can be obtained from it. Their foreign commerce is with many regions of the Orient, as is stated in the said memorial, from no. 20 on; and in no. 37 it is shown that only the inhabitants of the Philipinas can carry on the commerce with China, because they have means for this only--exporting that merchandise to Nueva España, and obtaining the returns from it in silver, with which to maintain it; for they have no other commodity which the Chinese crave, as is proved in the said memorial, no. 70. From this the conclusion is drawn that the islands cannot be preserved without commerce, and that this must necessarily be conducted with Nueva España in Chinese merchandise, and in some of their own products.