186 



ULCERS. 



feet, the parts most distant from the centre of 

 circulation ; the toes fall of, and the limb be- 

 comes distorted. Phagsedenic sores are most 

 common amongst the poor and the slaves, who 

 live on manioc, fruit, and salt shark often putrid. 

 Large and painful phlegemonous abscesses, attack- 

 ing the muscular tissue, occasion great consti- 

 tutional disturbance : they heal, however, readily 

 after suppuration. Scabies, yaws (Erambsesia), 

 psoriasis, and e craw-craw,' inveterate as that of 

 Malabar or the Congo River, commonly result 

 from personal uncleanliness, unwholesome food, 

 and insufficient shelter and clothing. That 

 frightful malady Lupus presents pitiable ob- 

 jects. 



The indigenous diseases which require men- 

 tion are fevers, bowel-complaints, and pulmon- 

 ary affections. 



Eevers at Zanzibar have been compared with 

 Aaron's rod ; at times they seem to swallow up 

 every other disease, and generally they cause the 

 greatest amount of mortality. As at Muham- 

 reh, and on the swampy margins of the Shat el 

 Arab (Persian Gulf), the constitution worn out, 

 and the equilibrium of the functions deranged 

 by moist heat and sleeplessness, especially during 

 and after the heavy rains of the S. West mon- 



