Beware the malignant vapors! Medical science has made significant strides since the seventeenth century, especially regarding the causes of diseases and the treatment of them. Explore the prevailing medical theories of the early modern period with a park educator and discover just how far science has advanced. Find out how past physicians, surgeons, and apothecaries employed these theories and their own observations to treat patients, using techniques such as bloodletting and purging. Also, learn about the popularity of less-invasive, do-it-yourself healthcare and “home” remedies made from herbs and spices.