The noted _Memorial informatorio_ (Madrid, 1637) of Juan Grau y Monfalcón, procurator-general for Manila and the Philippines at the Spanish court, is here presented; it concerns the important and long-debated question of the restrictions imposed on the trade of the Philippine Islands with Nueva España. Certain measures have been proposed to the Spanish government which the procurator regards as dangerous to the interests of the Philippines, and he hastens to urge against these proposals numerous forcible arguments. He claims that the adoption of the former must result in the ruin of the citizens. And thus the crown must either support the entire expense of the islands, or abandon its hold on them--the former a heavy tax on its means, the latter most damaging to its power and prestige. A royal commissioner has been sent to Acapulco to investigate the revenue frauds alleged there, which greatly disturbs those who are engaged in trade, both in Nueva España and in the islands. The proposal to abandon the islands has been revived; the procurator rehearses the arguments advanced for this, and vigorously attacks them, urging that the possession of Filipinas be maintained by the crown as is that of Flanders. He proceeds to represent the importance of the islands, adducing many arguments to show this: the dependence of the Malucos on Filipinas, the size and number of those islands, the greatness and importance of Manila, the mineral resources of the islands, and, above all, their commerce.