Note 42 — Chapter VII

According to Humboldt, the farm of Enciero, near Vera Cruz, 3,043 feet above the level of the sea, is the superior limit of the vomito or yellow fever; and strangers who come by sea, and therefore pass through a gradual change of atmospherical temperature, are observed to be less liable to contract the yellow fever than the whites and mestizoes who inhabit the table-land of Mexico, (of which the mean temperature is about 60° or 62° of Fahrenheit,) when they descend during the wet season to the port of Vera Cruz. The rains begin in May and end in October, when the “nortes” or north winds set in; and during the prevalence of these winds the yellow fever or vomito disappears.—Translator’s Note.