Global silver trade from the 16th to 18th centuries American mining for the early part of the 16th Century. Mining in the Americas became formally industrialized when the process of mercury amalgamation became popularized. Mercury amalgamation was invented by a Spaniard in central Mexico in the 1550s. Historians dispute what individual was the first to invent the process, however most agree that it was a Spaniard. Mercury was the one of the highest costs of production for the Americas, since much of it had to be shipped. The ratio of Mercury to silver produced was about two to one. Furthermore, German miners introduced the stamp mill and lead smelting
The Modern Home Physician use in the home. It has 728 pages that also contain, apart from the text, 232 photographs and almost 700 drawings. The Modern Home Physician The Modern Home Physician, A New Encyclopedia of Medical Knowledge is a medical encyclopedia first published in 1934 by the Wm. H. Wise & Company in New York City. It was edited by Victor Robinson, Ph. C., M.D., who was a physician and professor of the History of Medicine at Temple University's School of Medicine in Philadelphia, Pennsylvania and also the editor-in-chief of the reading materials "Historia Medicinae", "Medical Life", and "Medical Review of Reviews".