The squadron under the command of Mr. Anson (of which I here propose to recite the most material proceedings) having undergone many changes in its destination, its force, and its equipment, during the ten months between its original appointment and its final sailing from St. Helens; I conceive the history of these alterations is a detail necessary to be made public, both for the honour of those who first planned and promoted this enterprize, and for the justification of those who have been entrusted with its execution. Since it will from hence appear that the accidents the expedition was afterwards exposed to, and which prevented it from producing all the national advantages the strength of the squadron, and the expectation of the public, seemed to presage, were principally owing to a series of interruptions, which delayed the commander in the course of his preparations, and which it exceeded his utmost industry either to avoid or to get removed. When, in the latter end of the summer of the year 1739, it was foreseen that a war with Spain was inevitable, it was the opinion of some considerable persons then trusted with the administration of affairs, that the most prudent step the nation could take, on the breaking out of the war, was attacking that crown in her distant settlements; for by this means (as at that time there was the greatest probability of success) it was supposed that we should cut off the principal resources {12} of the enemy, and should reduce them to the necessity of sincerely desiring a peace, as they would hereby be deprived of the returns of that treasure by which alone they could be enabled to carry on a war.