CONTENTS. 



CHAPTER III. 



320 TO 212 B.C. 



PAGH 



School of Science at Alexandria The Ecliptic and the Zodiac 

 Greeks believed that the Sun moved round the Earth Aristar- 

 chus knew that it was the Earth which moved He also knew 

 of the Obliquity of the Ecliptic, and that the Seasons are caused 

 by it He knew that the Earth turns daily on its Axis Euclid 

 discovers that Light travels in straight lines Archimedes dis- 

 covers the Lever Principle of the Lever Hiero's Crown, and 

 how Archimedes discovered the principle of Specific Gravity 

 Screw of Archimedes . 1 8 



CHAPTER IV. 

 280 TO 120 B.C. 



Erasistratus and Herophilus study the Human Body Eratosthenes 

 the Geographer lays down the First Parallel of Latitude and the 

 First Meridian of Longitude He measures the Circumference of 

 the Earth Hipparchus writes on Astronomy Catalogues 1,080 

 Stars Calculates when Eclipses will take place Discovers the 

 Precession of the Equinoxes . . . . . . .26 



CHAPTER V. 



FROM A.D. 70 TO 2OO. 



Ptolemy founds the Ptolemaic System He writes on Geography 

 Strabo, a great traveller, writes on Geography Studies 

 Earthquakes and Volcanoes Galen the greatest Physician of 

 Antiquity Describes the Two Sets of Nerves Proves that 

 Arteries contain Blood Lays down a theory of Medicine 

 Greece and her Colonies conquered by Rome Decay of Science 

 in Greece Concluding remarks on Greek Science . . 32 



