THE 
EMPORIUM 
OF 
ARTS AND SCIENCES. 
V^TTniy” October, 1814. ™[N^TlIL 
LEAD. 
In treating of the article lead, the following notices re- 
specting the manufacture of shot escaped me. 
Granulation of Shot . 
The manufacture of common Howling shot consists 
merely in causing the fused metal to fall in equal spheri- 
cal drops into water. The lead is melted with the ad- 
dition of a small proportion of arsenic, which, being re- 
duced to a metallic state, by means of grease stirred in 
during the fusion, renders it less fluid. An oblong shal- 
low vessel of iron, perhaps 10 inches wide, 14 long, and 
2 1-2 deep, called a card, whose bottom is pierced with 
holes proportionate to the intended size of the shot, is 
placed at the height of from one to three inches, over the 
surface of a tub of water, covered with a thin film of oil 
The card is previously heated to the temperature of the 
metal by immerging it in the Cauldron ; and a stratum of 
soft dross or scoriae, which are found on the surface of 
the fused alloy, is then placed on its perforated bottom, 
and, being slightly pressed down with the ladle, forms a 
V 03L® IIL " * ^ T t 
