Additional Notes. 531 



iion to br alwa\^s hereafter consideixd as an Interesting epoch 

 in the history of medicine in this country. In truth, it may 

 be asserted, tiiat this gentleman, for a long period after the 

 commencement of his course of public instruction, did more 

 in his capacity of teacher than all the other physicians in the 

 United States, collectively, to diffuse a taste for medical in- 

 quiries, and to excite a spirit of observation, and of lauda- 

 ble ambition, among the students of medicine in our country. 

 The inquiries of Dr. Mitchill, with respect to pestilential 

 diseases, the subject of quarantine, 6cc. are likewise deeplv 

 connected with that mass of investigations in this country 

 ■which commenced in throwing ofFthe yoke of European au- 

 thority, and asserting the rights of free and independent judg- 

 ment. Nor is less praise due to Dr. Barton, for his en- 

 Jightened efforts to enrich the Materia Medica of the United 

 States, by his researches into the virtues of their vegetable trea- 

 sure. — Many other names might also be Inserted in this place, 

 "were not the task of making a selection difficult and invidious. 



NOTES ON CHAPTER V. 



1 HE statement, at the beginning of this chapter, that, at 

 the commencement of the eighteenth century, "almost half* 

 the surface of the globe was in a great measure unknown^ 

 rather falls short of the truth than exceeds it. Perhaps it may 

 be asserted that five-sixths were, at that period, scarcely at 

 all known. 



Additional FoT^agers. p. 337. 



Lieutenant Synd, In the Russian service, s»t out on s^ 

 voyage of discovery In 1764, and returned In 1768. He 

 steered a course more north-east than any of his predecessors, 

 ^nd made some valuable discoveries between Asia and Ame- 

 rica. 



Among the Voyages which have contributed to the im- 

 provement of Geography, that which was performed, by 

 prder of the French king, in 1771 and 1772, by Messrs. De' 



