n in
Mantua, and had formerly visited Madrid for the purpose, it was said,
of offering his services to King Philip in the Belgian war. But wearied
with waiting the offended engineer left the court with the intention of
making the King of Spain sensibly feel the value of talents which he had
so little known how to appreciate. He next sought the service of Queen
Elizabeth of England, the declared enemy of Spain, who, after witnessing
a few specimens of his skill, sent him to Antwerp. He took up his
residence in that town, and in the present extremity devoted to its
defence his knowledge, his energy, and his zeal.

As soon as this artist perceived that the project of erecting the bridge
was seriously intended, and that the work was fast approaching to
completion, he applied to the magistracy for three large vessels, from a
hundred and fifty to five hundred tons, in which he proposed to place
mines. He also demanded sixty boats, which, fastened together with
cables and chains, furnished with projecting grappling-irons, and put in
motion with the ebbing of the tide, were intended to second the
operation of the mine-ships by being directed in a wedgelike form
against the bridge. But he had to deal with men who were quite
incapable of comprehending an idea out of the common way, and even where
the salvation of their country was at stake could not forget the
calculating habits of trade.

His scheme was rejected as too expensive, and with difficulty he at last
obtained the grant of two smaller vessels, from seventy to eighty tons,
with a number of flat-bottomed boats. With these two vessels, one of
which he called the "Fortune" and the other the "Hope," he proceeded in
the following manner: In the hold of each he built a hollow chamber of
freestone, five feet broad, three and a half high, and forty long. This
magazine he filled with sixty hundredweight of the finest priming powder
of his own compounding, and covered it with as heavy a weight of large
slabs and millstones as the vessels could carry. Over these he further
added a roof of similar stones, which ran up to a point and projected
six feet above the ship's side. The deck itself was crammed with iron
chains and hooks, knives, nails, and other destructive missiles; the
remaining space, which was not occupied by the magazine, was likewise
filled up with planks. Several small apertures were left in the chamber
for the matches which were to set fire to the mine. For greater