Philip IV. seems to have been more anxious to use Palafox as an instrument to remove the Duke of Escalona, than to empower him, for any length of time, with viceroyal authority; for, no sooner did he suppose that the duke was displaced quietly without leaving the government in the hands of the Audiencia, than he appointed the Conde de Salvatierra as his representative. This nobleman reached his government on the 23d of November, 1642, and Palafox immediately retired from his office, still preserving, however, the functions of Visitador. At the conclusion of this year the duke departed from Churubusco for San Martin, in order to prepare for his voyage home; and in 1643, this ill used personage left New Spain having previously fortified himself with numerous certificates of his loyalty to the Spanish crown, all of which he used so skilfully in vindication before the vacillating and imbecile king, that he was not only exculpated entirely, but offered once more the viceroyalty from which he had been so rudely thrust. The duke promptly rejected the proposed restoration, but accepted the viceroyalty of Sicily. Before he departed for the seat of government, he gave the king many wise councils as to his American colonies, but, especially advised him to colonize the Californias. Don Pedro Portal de Casañete was commissioned by Philip for this purpose. In 1644, there were already in Mexico twelve convents of nuns, and nearly an equal number for males, which, either by the unwise but pious zeal of wealthy persons, were becoming rich and aggregating to themselves a large amount of urban and rural property. Besides this the dependants upon these convents, both males and females, were largely increasing;--all of which so greatly prejudiced not only property but population, that the Ayuntamiento or City Council solicited the king not to permit the establishment in future of similar foundations, and to prohibit the acquisition of real estate by monasteries, inasmuch as the time might come when these establishments would be the only proprietors. Meanwhile Casañete arrived in Mexico on his way to the shores of the Pacific. Salvatierra received him kindly and made proper efforts to equip him for the enterprise. The chiefs and governors of the interior were ordered to aid him in every way; but just as he was about to sail, two of his vessels were burned, whereupon his soldiers dispersed, whilst the families of his colonists withdrew, in hope of being again soon summoned to embark.