The First Secretary of State had particularly recommended BrigadierRafael Clavijo, recently appointed Inspector General of Maritime Couriers. officer advised us to board the corvette Pizarro, bound for Havana and Mexico. This light frigate was not famed for itssailing speed, although during its long journey from the River Plate it hadluckily just escaped English men-of-war. Clavijo sent instructions to thePizarro to authorize the loading of our instruments, and to allow us to carry out atmospheric testsduring the sea-voyage. The captain was ordered to stop at Tenerife andremain there as long as was needed for us to visit the port of Orotava andclimb the Pico de Teide.