Donating blood is not in vein!

Heather Ainsley ECB Publishing, Inc. In the year 1628, an English physician named William Harvey discovered the circulation of blood. Shortly afterward, the earliest known blood transfusion was attempted. This proved to be a tricky process, as it wasn't until 1665 that the first record of a successful transfusion occurred in England, using dogs as experimental subjects. In 1795, American physician Philip Syng Physick performed the first successful human blood transfusion, but did not publish