KEY AND INDEX 



to the starting point in a few seconds less than 

 half an hour. 



Savery, Thomas, vi, 85. Born at Shilstone, 

 near Modbury, Devonshire, about 1650; died at 

 London, May, 1715. English engineer. He is 

 remembered particularly for his invention of a 

 machine for raising water from mines by means 

 of steam power. This device, patented in 1698, 

 represented the first application of steam power 

 for mechanical purposes. 



Scheele, Karl William, iv, 23. Born at Shal- 

 sund, Dec. 2, 1742; died at Koping, Sweden, 

 May, 1786. A celebrated Swedish chemist. He 

 discovered oxygen independently, and without 

 knowing that Priestley had already discovered 

 it. He also discovered many other important 

 substances, such as arsenic acid, lactic acid, tar- 

 taric acid, ammonia, and chlorine, this last be- 

 ing of great value commercially for bleaching. 



Schiaparelli, Giovanni Virginio, iii, 35. Born 

 at Savigliano, Italy, March 4, 1835. Italian as- 

 tronomer. The first to point out that meteor 

 swarms move in the orbits of pre-existing 

 comets, and are the debris of comets. 



Schleiden, Dr. M. J., iv, 118. Born at Ham- 

 burg, April 5, 1804; died at Frankfort-on-the- 

 Main, June 23, 1881. German botanist. The 

 first to demonstrate the all-importance of cell- 

 nucleii in the economy of the cell. 



Schoenlein, J. L., iv, 208. A German physi- 

 cian who, in 1839, made the discovery that fa- 

 vus, a distressing disease of the scalp, is due to 

 the presence of a microscopic vegetable organ- 

 ism. This was a step toward the later discovery 



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