BIOGRAPHICAL INDEX 



tury, A.D. Astronomer, geographer, and math- 

 ematician. The last great astronomer of anti- 

 quity. His mathematical system of astronomy 

 was accepted for several centuries until finally 

 displaced by the system of Copernicus. 



Pythagoras, i, 112. Born at Samos, Greece, 

 about 582 B.C.; died at Metapontum, Magna 

 Graecia, about 500 B.C. Famous Greek philoso- 

 pher and mathematician. He is said to have been 

 the first to advocate that the earth is a sphere. 



Ramon y Cajal, Dr. Santiago, iv, 283. Born 

 at Petitte de Aragon, Spain, 1852. Spanish phy- 

 sician and histologist. Professor of Histol- 

 ogy in Barcelona and Madrid. Received one of 

 the Nobel prizes, 1906. 



Ramsay, Sir William, v, 86. Born at Glas- 

 gow, Oct. 2, 1852. Scotch chemist. In 1894 

 (with Lord Rayleigh) he discovered argon. He 

 isolated helium, krypton, neon, and xenon. In 

 1896 he published "The Gases of the Atmos- 

 phere and the History of their Discovery." 



Rawlinson, Canon, i, 82. Born at Chadling- 

 ton, Oxfordshire, Nov. 23, 1812; died at Can- 

 terbury, Oct. 6, 1902. English theologian, his- 

 torian, and Orientalist. His histories of the 

 ancient Oriental peoples have thrown much light 

 on the scientific knowledge of their time. 



Rawlinson, Sir Henry, iv, 229; v, 9. Born at 

 Chadlington, Oxfordshire, April n, 1810; died 

 at London, March 5, 1895. English Assyriolo- 

 gist. He wrote extensively on Assyriology, giv- 

 ing a clear insight into the status of science 

 among the Assyrians and Chaldeans. 



Rayleigh, Lord, v, 86. Born Nov. 12, 1842. 

 English physicist. For eleven years he was sec- 



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