CONTENTS 

 I Francis Bacon (1561-1626) i 



THE METHOD OF INDUCTIVE SCIENCE 

 ON THE INTERPRETATION OF NATURE, OR THE 

 REIGN OF MAN 



II NicoLAus Copernicus (1473- 



1543) 20 



THE new idea of THE UNIVERSE 



III JoHANN Kepler (1671-1630) 29 



ON THE PRINCIPLES OF ASTRONOMY 



IV Galileo Galilei (1564-1642) 36 



THE COPERNICAN VERSUS THE PTOLEMAIC AS- 

 TRONOMIES 



V William Harvey (157 8- 1667) 46 



THE CIRCULATION OF BLOOD IN ANIMALS 



VI Robert Boyle (1627-1691) 49 



THE DISCOVERY OF THE LAW OF THE COMPRESSI- 

 BILITY OF GASSES 



VII Christian Huyghens (1629- 



1695) 52 



the wave theory of light 



VIII Anthony von Leeuwenhoeck 



(1632-1723) 62 



OBSERVATIONS ON ANIMALCULE 



Sir Isaac Newton (1642-1727) 6'j 

 the theory of gravitation 



Benjamin Franklin (1706- 



1790) 72 



the identity of lightning and electricity 



Linnaeus (1707-1778) 76 



the sex of plants 



Joseph Black (1728-1799) 89 



THE discovery OF CARBONIC ACID GAS 



xi 



Q ^ n o n 



