"But for a moment or two before the pipe which is to convey the metal to the mold is opened, the smith stands and stirs the molten mass to see if all is melted. Then he casts in certain proportions of zinc and other metals which belong to the secrets of the trade; he knows how much depends upon these little refinements, which he has acquired by experience, and which perhaps he could not impart even if he would, so true is it that in every art that which constitutes success is a matter of instinct, and not of rule, or even science.
"He knows, too, that almost everything depends upon the moment chosen for flooding the mold. Standing in the intense heat, and calling loudly for a still more raging fire, he stirs the metal once more. At a given signal the pipe is opened, and with a long smothered rush the molten metal fills the mold to the brim. Nothing now remains but to let the metal cool, and then to break up the clay and brick work and extract the bell, which is then finished for better or for worse."
We learn much of the difficulties encountered even by these great masters in successfully casting the bells, and that even they were not exempt from failure. "The Great Salvator" bell at Malines, made by Peter Van den Gheyn, cracked eight years after it was hung in the tower (1696). It was recast by De Haze of Antwerp, and existed up to a few years ago--surely a good long life for any active bell.
In the belfry of St. Peter's at Louvain, which is now in ruins and level with the street, was a great bell of splendid tone, bearing the following inscription: "Claes Noorden Johan Albert de Grave me fecerunt Amstel--odamia, MDCCXIV."
Haweis mentions also the names of Bartholomews Goethale, 1680, who made a bell now in St. Stephen's belfry at Ghent; and another, Andrew Steilert, 1563, at Malines (Mechlin). The great carillon in the belfry at Bruges, thus far spared by the iconoclasts of 1914, consisting of forty bells and one large Bourdon, or triumphal bell, is from the foundry of the great Dumery, who also made the carillon at Antwerp.
Haweis credits Petrus Hemony, 1658, with being the most prolific of all the bell founders. He was a good musician and took to bell founding only late in life. "His small bells are exceedingly fine, but his larger ones are seldom true."