Fathers of Biology

Aristotle probably wrote at this time some philosophical works, the fame of which reached the ears of Philip, King of Macedonia, and added to the reputation which the young phil...

To the work on the "Fabric of the Human Body" we have already alluded, as well as to the causes which led to its being written. More than half of this great treatise is occupied...

From certain observations in various parts of his works, it appears that, although ignorant of the doctrine of atmospheric pressure, he was acquainted with some of its practical...

Among insects, some (_e.g._ grasshopper, cricket, ant, etc.) produce young in the ordinary way, by the union of the sexes; in other cases (_e.g._ flies and fleas) this union of...

Produced by Bryan Ness, Stephen Blundell and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The...

In one important respect Harvey's account of the circulation was incomplete. He knew nothing of the vessels which we now speak of as capillaries. Writing to Paul Marquard Slegel...