When the wormwood was properly dried it provided them with a very inflammable substance, especially afterwards when the engineer had impregnated it with nitrate of potash, of which the island possessed several beds, and which is in truth saltpeter.
En efecto, aquella artemisa convenientemente desecada, dio una sustancia inflamable, sobre todo cuando el ingeniero la hubo impregnado de aquel nitrato de potasa que la isla tenía en abundancia en muchas capas, y que no era más que el salitre.