This third volume, of a five volume series, by Dr. Robert I Levy. ÒThe History of Sinai Hospital in Baltimore MarylandÓ within the context of the evolution of Jewish Hospitals, from the 19th century on. Chapters two, eight, and nine treat various aspects of Sir William OslerÕs work. Chapters include ÒRobert BoyleÕs Experimental History of Colours and lignum nephriticum,Ó ÒPulvis Impecacunanhae et Opii- The Powder and The Buccaneer, Thomas Dover,Ó Chapter seven is a tribute to gastroenterologist John C. Hemmeter (1863-1931) author of Masterminds in Medicine, published in 1927. Chapter ten titled, ÒNicholas Monardes, Guaiacum- the Holy Wood from the New World, and the French PoxÓ puts in context the discovery of medicinal plants unknown previously to the Europe, and brought back from the New world by explorers in the 15th century.