DISEASES OF MANKIND. 781 



TABLE II. 



Exhibiting the average annual ratio of Mortality per 1000 of Black Troops serving 

 in the West Indies, Sierra Leone, and the South-east coast of Africa. 



Total 40-0 30-1 10-9 



Thus we perceive, that in Great Britain, the 

 Canadas,Nova Scotia, and New Brunswick, about 

 one half of the mortality is from diseases of the 

 respiratory organs ; whereas in the warm climate 

 of the Mediterranean, they form about of the 

 whole, in the West Indies nearly *-, and not 

 yj-o- part among the white troops in tropical 

 Africa. We are also informed by Tulloch, that 

 in the East Indies, where the mean annual mor- 

 tality varies from seventy to ninety per 1000, 

 nearly the whole was from fever, dysentery, cho- 

 lera, diarrhoea, and disease of the liver : that 

 among 74,850 native troops serving in Madras, 

 the mean annual ratio was only one per 1000 

 from all diseases of the lungs ; and but 2-4 in 

 the Mauritius and at St. Helena. We further 

 learn from the last edition of Dr. James John- 

 son's work on the Diseases of Tropical Climates, 

 that from 1827 to 1836, the proportion of deaths 

 from diseases of the respiratory organs was TT of 



