White Mountains, Lake George, Lake Champlain, Trenton Falls, Nia- 

 gara Falls, the Natural Bridge in Virginia, and the Mammoth Cave in 

 Kentucky. In the Canadas it is known that he travelled as far as the 

 Sagnenay River. 



Besides the two voyages across the Atlantic, already described, he 

 afterwards made three visits to Europe. One was undertaken in the 

 spring of 1842, in company with his brother Charles. He then tra- 

 velled through England, France. Switzerland and Italy, and returned 

 to America only a short time before the death of his father, which 

 event occurred in December, 1843. He went to England again in 

 1844, accompanied by his brother William, who describes his activity 

 in visiting various mineral localities and points of geological interest 

 in that country. He also at that time made large purchases of mineralo- 

 gical specimens and of fossil remains. His last voyage across the Atlan- 

 tic was in 1851, when he attended the great international exhibition in 

 England. He then also visited Belgium, Holland, Germany, and 

 France, staying a month in Paris with his brother William, who for 

 several years made his home in the capital of France. 



Previous to these last three voyages to Europe he had changed his 

 residence in America. In the spring of 1841 he removed with his 

 brother Rathmell from New London, Chester Co., Pennsylvania, to near 

 Newark, Delaware. But while he resided both at New London and at 

 Newark, he kept a house or suite of rooms in Philadelphia, which latter 

 city he generally visited for a few days every week, and during some 

 periods, indeed, he spent continuously more time in the city than in the 

 country. 



Although Dr. Wilson travelled so frequently and so f;ir, it is very 

 characteristic of him that we know so little of his travels. Indeed, 

 the most of his acquaintances never knew that he travelled at all. He 

 invariably, on all occasions, refrained from speaking of himself, or of 

 what he had done. Probably no one ever fulfilled more strictly than 

 himself the rule, '' Let not the left hand know what thy right hand 

 doeth." His fiivorite motto through life was •' lies non Verba." He 

 made no record of his journeys, and .even his own immediate family 

 can simply state that they were frequent and performed in the most 

 simple and unostentious manner. His object wherever he went was 

 to ob.serve — to obtain larger and deeper views of the great world in 

 which we live; and beyond this all else was of minor value. But 

 while we are able to give no nan-atives of his voyages and travels, we 

 can contemplate with the highest admiration the rich fruits which his 



