Besides the increase and improvement of the troops of the line, the government's attention was directed towards the fortification of the ports and interior passes. The Castle of San Juan de Ulua was repaired at a cost of a million and a half of dollars. The small island of Anton Lizardo was protected by military works at an expense of a million two hundred thousand dollars. A splendid battery was sent from Spain for the castle, and the inefficient guns of Acapulco were despatched to the Fillipine islands to be recast and sent back to America. In the interior of the country, in the midst of the plain of Peroté, the Castle of San Carlos was built in the most substantial and scientific manner; and although this fortress seems useless, placed as it is in the centre of a broad and easily traversed prairie, yet, at the time of its construction, it was designed as an _entre depot_ between the capital and the coast, in which the royal property might always be safely kept until the moment of exportation, instead of being exposed to the danger of a sudden seizure by the enemy in the port of Vera Cruz. Many other points along the road from Vera Cruz are better calculated to defend the interior passes of the country from invasion; but as the attacks of the enemy were not expected to be made beyond the coast upon which they naturally supposed they would find the treasure they desired to plunder, it was deemed best to establish and arm the fortress of San Carlos de Peroté. Such were some of the leading acts and occurrences in New Spain during the viceroyalty of the Marques de Croix. His general administration of affairs is characterized by justice. He lived in harmony with the rigid Visitador Galvez, and although the gossips of the day declared he was too fond of wine, yet, on his return to Spain he was named Captain General of the army, and treated most kindly by the king. [Footnote 46: Dr. Dunham's History of Spain and Portugal, vol. 5, p. 175.] CHAPTER XIV. 1771-1784. BUCARELI Y URSUA VICEROY.--PROGRESS OF NEW SPAIN.--GOLD PLACERES IN SONORA.--MINERAL WEALTH AT THAT PERIOD.--INTELLECTUAL CONDITION OF THE COUNTRY.--LINE OF PRESIDIOS.--MAYORGA VICEROY.--POLICY OF SPAIN TO ENGLAND AND HER COLONIES.--OPERATIONS ON THE SPANISH MAIN ETC.--MATIAS GALVEZ VICEROY--HIS ACTS. DON ANTONIO MARIA DE BUCARELI Y URSUA, LIEUTENANT GENERAL OF THE SPANISH ARMY, XLVI. VICEROY OF NEW SPAIN. 1771-1779.