""Assaying. In Three Parts: Parts 2-3, Gold And Silver Bullion, Lead, Copper, Tin, Mercury, Zinc, Nickel And Cobalt, Chromium, Bismuth, Arsenic, Antimony, Sulphur, Salt"" is a book written by Charles Howard Aaron in 1900. The book is divided into three parts, with parts two and three focusing on the assaying of various metals and minerals, including gold and silver bullion, lead, copper, tin, mercury, zinc, nickel and cobalt, chromium, bismuth, arsenic,...