The works of the highly experienced and famous chymist, John Rudolph Glauber: containing, great variety of choice secrets in medicine and alchymy in the working of metallick mines, and the separation of metals: also, various cheap and easie ways of making salt-petre, and improving barren-land, and the fruits of the earth. Together with many other things very profitable for all the lovers of art and industry. Translated into English, and published for publick good by the labour, care, and charge, of Christopher Packe, Philo-chymico-Medicus.