262 
Lead . 
fled, one of the ingots or bars of slag must be added : as 
soon as the whole is combined, a small quantity of the li- 
quid metal is to be taken out with a ladle, and dropped 
from a height of about two feet into the water. If the 
shot be not perfectly round, it will be necessary to add 
more slag, till it drops in a globular form. The metal is 
next skimmed, and the scum poured into an iron or cop- 
per frame perforated with round holes, according to the 
size of the shot designed ; the scum is then to be squeez- 
ed while soft, through the frame, into which the liquid 
should be poured, and dropped through the holes. For 
the smallest shot, the frame must be at least ten feet above 
the water, and for the largest, about 150 feet ; the height 
being increased or diminished, in proportion to the size 
of the shot. [ 1 Art , Man, 
Shot Manufactories have lately been established or re- 
vived, and appear to promise to supersede the importation 
of English shot. They are manufactured principally 
from Lead found in Louisiana, and shipped from New- 
Orleans. 
Patent shot, as Dr. Black has informed us, are manu 
factored in England as follows : 
A little orpiment or arsenic is added to the lead, which 
disposes it to run into spherical drops much more rapid- 
ly than it would do when pure. The melted lead is pour- 
ed into a cylinder, whose circumference is pierced with 
holes. The lead streaming through the holes soon divides 
into drops, which fall into water, where they congeal. 
They are far from being all spherical, many being shaped 
like pears, and must be picked. This is done by a very 
ingenious contrivance. The whole is sifted on the upper 
end of a long, smooth, inclined plane, and the grains roll 
down to the lower end. But the pear-like shape of the 
bad grains makes them roll down irregularly, and they 
