The History of Salt

"The History of Salt: With Observations on the Geographical Distribution, Geological Formation, and Medicinal and Dietetic Properties" by Evan Martlett Boddy

Salt is an incredibly important part of civilization. It's allowed food to be preserved, it's been a valuable spice, and it's even been used as medicine. In this book, Boddy thoroughly explains the history of this valuable mineral, including its physiological properties and what makes it unique.