AMERICAN 
JOURNAL OF SCIENCE AND ARTS. 
[SECOND SERIES.] 
Art. XLI— William Rowan Hamilton.' 
Witu1am Rowan HAmItton, one of the ablest mathemati- 
iby, 
descended originally settled in the north of Ireland, in the reign 
First and it is said that by right a baronetcy be- 
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* From the Monthly Notices of the Royal Astron. Soc., xvi, 109. 
Au. Jour. Sci.—Ssconp Series, Vou. XLII, No. 126.—Nov., 1866. 
38 ; 
