During this administration some very important work was done towards sanitation. Guemez succeeded in having the harbor thoroughly dredged; by urgent appeals to the residents he secured the removal from the streets of all encumbrances of traffic and insisted upon having them regularly cleaned. It can be justly said that, if the standard of public health in Cuba was raised at this period, it was undoubtedly due to his efforts. Nor was he indifferent to the extortion practiced upon the poorer inhabitants by unscrupulous landlords and shopkeepers, one of his ordinances to that effect regulating the prices at which provisions were to be sold by the grocers and thus insuring a proper and sufficient supply of these necessities to the population which otherwise would have been underfed. He was also the first governor of Cuba who paid attention to the island's forests and curbed the operations of the thieves that ravaged them. Of course such measures were bound to be resented by those elements who had previously profited from the freedom with which they could carry on their trade regardless of human equity and public welfare; and although the administration of Guemez was one of great material prosperity for the people, he did not escape the fate that befell so many of his predecessors, that of being made the target of slanderous accusations. But the government had profited from previous experiences of this character, that of the Marquis de Casa-Torres being still remembered; it was no longer inclined to lend so ready an ear to charges raised against the governors, and paid no attention to the attempts made by his enemies to discredit Guemez in Madrid.
The colonial government was then in charge of D. Jose del Campillo, an official of great knowledge and sagacity and of wide experience in economic and financial affairs. Many of the improvements that had been introduced in Spain by Minister Ori were through D. Campillo's efforts now applied to the colonies in America. Among these valuable innovations were the regulation of the revenues, the reduction of import and export duties, and the distribution of the realenzes or royal patrimonies. But equally important was the creation of royal commissions to inquire into the state, the resources and needs of the provinces, and to organize industry and commerce upon a sound and equitable basis.