Parrott
This pictured specimen is a good example of the Federal Parrott case-shot
projectile, which was manufactured in large quantities during the war. The black
pitch matrix was patented by Alfred Berney of New Jersey on June 17, 1862, patent #35,659,
and was an improvement over the sulphur matrix . In the manufacture of case-shot
projectiles, Mr. Berney used in his matrix the residue from the distillation of coal-tar,
generally known as "asphaltum." Go
here
for a complete specimen.