in ARGUMENTS FROM PATHOLOGY 123 



wife are drowned together, the wife is considered as 

 having died the last, because it is known that woman 

 faints sooner, and has therefore more chances to survive 

 than man, as experience has shown. 



So much then for variability between the different 

 sexes of the same species. If we now compare two races 

 of the same species mankind again similar differ- 

 ences come in. 1 



While man and woman are respectively more liable 

 to certain diseases, each race seems to offer different 

 predispositions to the principal diseases flesh is heir 

 to. Pathologists are well acquainted with this fact, 

 and numerous instances of it are known. The following 

 figures show the death-rate from marsh fever among 

 Europeans (Englishmen) compared with negroes, in 

 different countries : 2 



Death-rate per 1,000 

 Englishmen Negroes. 



Jamaica 101-9 8-3 



Guiana 59'2 8'5 



Trinidad 6r6 3'2 



Sierra Leone 410^0 24 



It has been sometimes said that negroes are entirely 

 refractory to malarial fever : the fact is not accurate, 

 but the figures show, at least, that the black race has, 



1 Cf. G. Delaunay's interesting Etudes de Biologic Comparce basees sur 

 V Evolution et la Nutrition. 1878-9. A. Delahaye, Paris. 

 - After Borclier, Geographic Medicate. Paris, 1884, p. 475. 



