As to powder, Cyrus Harding would have been able to make that also, for he had at his disposal saltpeter, sulphur, and coal; but this preparation requires extreme care, and without special tools it is difficult to produce it of a good quality.
Quant à la poudre, Cyrus Smith aurait pu en faire, car il avait à sa disposition du salpêtre, du soufre et du charbon; mais cette préparation demande des soins extrêmes, et, sans un outillage spécial, il est difficile de la produire en bonne qualité.