DAVID HOSACK 99 



and in 1794 attended the lectures of Sir J. E. 

 Smith, President of the Linnaean Society. 



A tedious journey of fifty-three days in the 

 Mohawk, varied only by an outbreak of typhus 

 on board, brought him again to New York, 

 where he settled down to practise, helped some- 

 what by friendships made on board. The pro- 

 fessorship of botany in Columbia College was 

 offered him in 1795, and in the autumn of that 

 year he and the other young doctors had plenty 

 of opportunity to distinguish themselves, as yel- 

 low fever of a malignant type broke out and 

 raged for over four years. Hosack was inces- 

 santly busy, but wrote a good deal on the fever, 

 urging always " the sudorific plan of treatment." 



Also at this time he took care of Dr. Samuel 

 Bard's patients for a while, so well that a partner- 

 ship was tendered and accepted. This was a 

 great compliment to Hosack, and — such was the 

 confidence in his judgment — he was often asked 

 by the Board of Health to investigate diseases. 



His writings embraced many subjects. Some 

 notable papers. Observations on Glossitis, Cases 

 of Anthrax, Observations on Haemorrhage and 

 the Removal of Scirrhous Tumors from the 

 Breast afterwards appeared in his three volumes 

 of Medical Essays, 1824- 1830. His Practical 

 Nosology came out in 1819. 



