C >77 ] 
being then charged with Twelve Penny- weight of Pow- 
der and Ball, as before ; the Surface of the Ball was but 
Eight-tenths of an Inch within the Mouth of the Piece, 
and the Powder colle&ed, after Three Difcharges, was 
refpe&ively, Two Penny-weight Two Grains } One 
Penny-weight Seventeen Grains ; and One Penny- 
weight Eleven Grains. 
The Barrel being further filled up, fo as to leave 
but Two Inches Eight-tenths for the Chace, and 
charged as before, the Ball rifing about One- fifth of an 
Inch beyond the Mouth of the Piece, the Powder 
collected, after theDifcharge, was Two Penny- weight 
Six Grains. Upon a Second Trial, the Ball being as 
much within the Mouth, One Penny- weight Sixteen 
Grains was collected. And at the Third Trial, the Ball 
being level with the Mouth, TwoPenny-weight Six: 
Grains were again found. 
The Committee alfo caufed fome Experiments ta 
be made of the Effect of a Touch-hole near the Fore- 
part of the Charge. They found upon difeharging the 
fhort Piece of Five Two-tenths of an Inch Chace, the 
Charge Twelve Penny-weight and Ball, as before, the 
Touch-hole being near the Fore-part of the Powder ; 
the Quantities of Powder, feverally colle&ed, were 
One Penny- weight Seven Grains and an half; One 
Penny-weight Six Grains ; and One Penny-weight 
Four Grains. And upon a Difcharge made with a 
little more Powder, which filled the Barrel exa&ly to 
the Edge of another Touch-hole, the former being 
ferewed up, the Quantity collected was One Penny- 
weight Nine Grains.. 
The Effeft of firing with heavy Slugs was alfo 
examined: The Weight of the Slugs and Quantities 
of 
