While the astronomers devoted themselves to estimating the regularity of the astronomical watches, the naturalists, with several officers, ascended the Peak, and collected some curious plants. Monneron succeeded in measuring this mountain with much greater accuracy than his predecessors, Herberdeen, Feuillee, Bouguer, Verdun, and Borda, who calculated its height respectively at 2409, 2213, 2100, and 1904 fathoms. Unfortunately his work, which would have settled the discussion, never reached France. Upon the 16th of October, the isles, or rather rocks, of Marten Vas were seen. La Perouse ascertained their position, and afterwards made for the nearest, Trinity Island, which was only some nine leagues to the west. The commander of the expedition sent a sloop on shore in charge of an officer, in the hope of finding water, wood, and provisions. The officer had an interview with the Portuguese governor, whose garrison consisted of about two hundred men, fifteen of whom wore uniforms, and the rest merely shirts. The poverty of the land was obvious, and the French re-embarked without having obtained anything. After a vain search for Ascension Island, the expedition reached Saint Catherine's Island, off the coast of Brazil. "After ninety-six days' navigation," we read in the narrative of the voyage published by General Millet-Mureau, "we had not one case of illness on board. The health of the crew had remained unimpaired by change of climate, rain, and fog; but our provisions were of first-class quality; I neglected none of the precautions which experience and prudence suggested to me; and above all, we kept up our spirits by encouraging dancing every evening among the crew, whenever the weather permitted, from eight o'clock till ten." Saint Catherine's Island, of which we have more than once had occasion to speak in the course of this narrative, extends from 27 degrees 19 minutes 10 seconds S. lat. to 27 degrees 49 minutes. It is only two leagues wide, and is divided in its narrowest part from the mainland by a channel of two hundred fathoms. The town of Nostra Senora del Desterra, the capital of the colony, where the governor resides, is built at the point of this narrow entrance. The population amounts, at the utmost, to three thousand, and there are about four hundred houses. The appearance of the town is very pleasant. According to Frezier's account, this island was a refuge in 1712 for the vagabonds who fled there from different parts of Brazil. They were Portuguese subjects in name only, and recognized no other authority. The country is so fertile that the inhabitants can live quite independently of any neighbouring colony. The ships in the harbour gave them shirts and coats, of which they had absolutely none, in exchange for provisions. This island is extremely fertile, and the soil could easily be made to grow sugar-cane, but the inhabitants are so poor that they cannot buy the needful slaves for the labour.