115 
repeated in 1805. With a view more fully to prepare 
himself for the duties of his professorship, he determined to 
avail himself of the advantages of foreign schools of science, 
and accordingly sailed for Europe in the spring of 1805. 
He remained abroad somewhat more than a year, attending 
lectures in London and Edinburgh, and devoting a portion of 
his time to travelling. In 1810 he published an account of 
his travels, entitled “ Journal of Travels in England, Hol- 
land, and Scotland in 1805-06, in 2 vols. 8vo,” which, in a 
subsequent edition, was printed in 3 vols. 12mo. This 
work is replete with useful and interesting matter, reflecting 
in an easy, perspicuous style the impressions of a diligent 
observer of men and things. It was widely circulated, and 
gave to the author an agreeable introduction to the reading 
public. 
During this residence abroad he had the opportunity of be- 
coming acquainted with many of the foremost scientific men 
of that period. Among others he mentions Dugald Stewart, 
Professors Hope, Murray, Playfair, Jamieson, and Seymour. 
In the preface to his Treatise on Chemistry, he acknowledges 
special obligations to his former teachers, Professors Murray 
and Hope of Edinburgh. Nor did he fail,—as who would ? 
—to embrace the opportunity of listening, in the House of 
Commons, to the eloquence of Pitt and Fox, Sheridan and 
Windham. 
On his return from Europe, in 1806, Professor Silliman 
resumed the duties of his professorship, embracing chemistry, 
pharmaceutics, mineralogy, and geology, which he continued 
to discharge with ability and rare popularity for a full half- 
century. He did not during this entire period have under 
his charge all these subjects, but it was only in 1855 that he 
relinquished ‘his post as a college teacher. Very few men 
in any department can show a scientific career so laborious 
and so long continued. 
