CONTENTS. 



PACK 



Brahe, the Danish Astronomer Builds an Observatory on the 

 Island of Huen Makes a great number - of Observations, and 

 draws up the Rudolphine Tables Galileo discovers the prin- 

 ciple of the Pendulum Calculates the velocity of Falling 

 Bodies, and shows why it increases Shows that Unequal 

 Weights fall to the Ground in the same time Establishes the 

 relations of Force and Weight Studies musical Sounds 

 Stevinus OH Statics Summary of the Science of the sixteenth 

 century .-.>,,. 72 



CHAPTER XI, 

 SCIENCE 'OP THE SEVENTEENTH CENTURY. 



Astronomical discoveries x>f Galileo The Telescope Galileo ex- 

 amines the Moon, and discovers the Earth-lighjt upon it Dis- 

 covers Jupiter's four Moons Distinguishes the Fixed Stars from 

 the Planets The phases of Venus confirm the Copernican 

 theory Galileo notices Saturn's Ring, but does not distin- 

 guish It clearly* -^ Observes the spots on the Sun-^The Inquisi- 

 tion force him to deny the movement of the EarthBlindness 

 and Death of Galileo * <. * . . . 85 



CHAPTER XIL 



SCIENCE OP THE SEVENTEENTH CENTURY (CONTINUED), 



Kepler the German Astronomer Succeeds Tycho as Mathema- 

 tician to the Emperor Rudolph His 'description of the Eye 

 He tries to explain the orbit of the planet Mars And by com- 

 paring Tycho's tables with observation discovers his First andl 

 Second Law of the movements of the Planets His delight at 

 Galileo's disco veries Kepler's Third Law-=-Comparison of the 

 labours of Tycho, Galileo, and Kepter . . . * 93 



