34 



TOPOGRAPHY 



ance, but was confined to the soldiers of one regiment, 

 of whom six died. In July, 1813, the yellow fever 

 again broke out, and carried off four hundred and 

 sixty-one of the troops, and 883 of the civilians, and 

 the disease ceased to rage only in December. This 

 epidemic again prevailed in the following year, from 

 August to the end of October; in this instance it 

 destroyed one hundred and fourteen of the military, 

 and one hundred and thirty-two of the inhabitants. 

 After a lapse of nearly fourteen years, this fever 

 again broke out in August, 1828, when, notwith- 

 standing the adoption of the most prompt and useful 

 measures, this epidemic carried off 1796 of the 

 military and civil population, and, according to Major 

 Tulloch's account, in the following proportions : 



Although this disease has been known to the pro- 

 fession for so long a time, still there is much diffi- 

 culty in arriving at any decided conclusion as to its 

 nature. Some medical officers have laboured to prove 

 that it is only an aggravated form of the remittent fe- 

 ver of tropical climates ; and others, that it is a disease 

 sui generis ; whilst a large number once believed in 

 its contagious nature. I must confess that my faith 

 in the doctrines of most schools, that the yellow fever 



