KEY AND INDEX 



that one was accepted by the United States 

 Government. Since that time he has added im- 

 provements to his boats, a fleet of which are 

 now in commission in the United States service. 



Holland, Philemon, i, 77. Born at Chelms- 

 ford, England, 1552; died at Coventry, Feb. 9, 

 1637. English writer and translator. He trans- 

 lated Pliny's "Natural History" in 1601. 



Honain ben Isaac, ii, 24. Lived about 809- 

 873, A.D. An Arabian physician. He was a 

 Christian Arab, who followed the medical teach- 

 ings of Galen. He was a great translator, and 

 one of the greatest philosophers of the Ninth 

 Century. 



Hooke, Robert, ii, 215. Born at Isle of Wight, 

 England, July 18, 1635; died at London, March 

 3, 1703. English mathematician and natural 

 philosopher. Inventor of many ingenious and 

 useful devices, among them the balance-spring 

 for regulating watches. He originated the idea 

 of making use of the pendulum in measuring 

 gravity, and first proposed the wave theory of 

 light. 



Hooker, Sir Joseph Dalton, iv, 171. Born at 

 Halesworth, Suffolk, June 30, 1817. English 

 botanist. With Lyell he first induced Darwin to 

 make public his work on the theory of evolu- 

 tion. He was director of the Kew Gardens for 

 twenty years, president of the Royal Society in 

 1873, and president of the British Association 

 in 1868. 



Howard, Luke, iii, 182. British scientist. Died 

 early in the Nineteenth Century. In 1803 ne 

 published in the "Philosophical Magazine," a 

 paper on clouds in which he gave names that 



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