Law XVI
The utmost diligence shall be taken in the port of Acapulco to ascertain and discover the reals, silver, and other things taken to the Filipinas, and our officials of the said port shall take account of it all. They shall advise the governor and royal officials of the islands of it, sending them the registers, and notifying them of what is advisable. The royal officials of Filipinas shall do the same with those of Acapulco. [Felipe III—Valladolid, December 31, 1604.]