400 years before Harvey's observation, Ibn Al-Nafis, a Syrian Arab physician correctly described the pulmonary circulation.
Omar
Mak
M
D004739:England; D049670:History, 17th Century; D049691:History, Medieval; D006801:Humans; D008514:Medicine, Arabic / Q000266:history*; D010827:Physiology / Q000266:history*; D011652:Pulmonary Circulation; D013593:Syria