Sentence:  The earliest was Apollo, and his son Aesculapius, and Asclepios; and Asclepios was uncle of Hippocrates ; these four earliest invented the building up of <WSD>leechcrafts</WSD> about fifteen hundred years after Noah's flood in the days of Artaxerxes, who was king of the Persians; [...] 
Meaning of the word marked with <WSD> tags:  The art or practice of healing or medicine.