The expedition arrived in Acapulco in March 1791. Galiano was put in charge of a group of Malaspina's scientific officers assigned to stay in Mexico for a year. Malaspina's letter to the viceroy of New Spain, Juan Vicente de Güemes, Count of Revillagigedo, read in part: "Under the orders of Ship Lieutenant Don Dionisio Galiano, he, together with Pineda, and Olavide, will proceed to ... [Galiano will be charged with coordinating in that capital, and later in Spain, all the notes of our past tasks ... Besides, he must extract all that information conducive to giving an exact idea of the former and present state of Spain."