Five hundred acres = fifteen and a half caballerias.
Sugar-houses are thought to be very considerable that yield 2000 cases annually, or 32,000 arrobas (nearly 368,000 kilogrammes.)
An arroba of 25 Spanish pounds = 11.49 kilogrammes.
A quintal = 45.97 kilogrammes.
A tarea of wood = one hundred and sixty cubic feet.