576 



Our Surroundings 



Name 

 Edison, T. 



Ehrlich, P. (er'lik) 

 Einstein, A. (in'stln) 



Fabricius, H. 



(fd-brish'i-tis) 

 Faraday, M. (far'd-da) 1791-1867 



Galen, C. (ga'l<?n) 130-201 



Galileo, G. (gal-i-le'6) 1564-1642 



Gay-Lussac, J. L. 

 (ga-lu-sak') 



Haller, A. von (hal'er) 1708-1777 



Halley, E. (hal'i) 1656-1742 



Harvey, W. 



Helmholtz, H. L. F. von 1821-1894 



(helm'holts) 



Henry, J. 1797-1878 



Herschel, Sir J. F. W. 1792-1871 



(hur'shcl) 



Huxley, T. H. (huks'li) 1825-1895 



Jenner, E. 1749-1823 



Joule, J. P. (joul) 



Dates Outstanding Contributions 



1847-1931 Invented the electric light and many 



other useful devices. 

 1854-1915 Improved the method of producing 



serum. 

 1879- Made many discoveries in various 



fields of science. Author of the 



theory of relativity. 

 1537-1619 Discovered that the veins have valves. 



Discovered a method of inducing an 

 electric current. 



Discovered importance of pulse. 

 Father of dissection and physiology. 



Invented the thermometer. Made 

 many discoveries in astronomy and 

 physics. 



1778-1850 Discovered that gases combine with 

 each other in certain fixed propor- 

 tions to form compounds. Made 

 many discoveries about the expan- 

 sion of gases. 



Wrote the first authoritative treatise 

 on physiology. 



Discovered Halley's comet. Made 

 discoveries concerning movements 

 of stars and of the moon. 



1578-1657 First to demonstrate the circulation 

 of blood in the body. The father 

 of embryology. 



Gave the first clear statement of the 

 law of the conservation of energy. 



Made many discoveries relating to 

 induced electric currents and to 

 the use of electromagnets. 



Improved the telescope and made 

 important astronomical discoveries. 



Made valuable discoveries in zoology. 



Discovered that smallpox can be 



prevented by vaccination. 



1818-1889 Made important discoveries concern- 

 ing the heat properties of gases 

 and the condensation of steam. 



