xiv CONTENTS. 



CHAPTER XIV. 



SCIENCE OF THE SEVENTEENTH CENTURY (CONTINUED). 



PAGE 



Fabricius Aquapendente discovers Valves in the Veins Harvey's 

 discovery of the Circulation of the Blood Discovery of the 

 Vessels which carry nourishment to the Blood Gaspard Asellius 

 notices the Lacteals Pecquet discovers the Passage of the fluid 

 to the Heart RUdbeck discovers the Lymphatics . . .no 



CHAPTER XV. 



SCIENCE OF THE SEVENTEENTH CENTURY (CONTINUED). 



Torricelli discovers the reason of Water rising in a Pump Uses 

 Mercury to measure the Weight of the Atmosphere Makes the 

 First Barometer M. Perrier, at Pascal's suggestion, demon- 

 strates variations in the pressure of the atmosphere Otto 

 Guericke invents the Air-pump Working of the Air-pump 

 Guericke proves the Pressure of the Atmosphere by the experi- 

 ment of the Magdeburg Spheres He makes the first Electrical 

 Machine Foundation of Royal Society of London and other 

 Academies of Science . . . . . . . . 116 



CHAPTER XVI. 



SCIENCE OF THE SEVENTEENTH CENTURY (CONTINUED). 



Boyle's Law of the Compressibility of Gases This same Law dis- 

 covered independently by Marriotte Hooke's theory of Air 

 being the cause of Fire Boyle's experiments with Animals 

 under the Air-pump John Mayow, the greatest Chemist of the 

 Seventeenth Century His experiments upon the Air used in 

 Combustion Proves that the same portion is used in Respira- 

 tion Proves that Air which has lost its Fire-air is Lighter 

 Mayow's ' Fire-air ' was Oxygen, and his Lighter Air Nitrogen 

 He traces out the effect which Fire-air produces in Animals 

 when Breathing . . . . . . , . .128 



