46 TROPICAL MEDICINE AND HYGIENE 



of the mucosa is sufficiently impaired to render this mem- 

 brane vulnerable to the vegetable organisms, bacilli 

 and cocci, present in the alimentary canal. In that case 

 extensive superficial necrosis occurs and ulceration may 

 result, which will of course persist after the malarial attack 

 has been relieved or has passed off (figs. 20 and 21), 



?* 



m 



FIG. 20. Parasites in Capillaries of Pancreas. 



(4) The capillaries in the heart may contain blood in 

 a similar condition of stasis. This is probably one of 

 the causes of the cardiac failure that frequently occurs 

 in malaria. Persons with old organic cardiac mischief, 

 pericardial adhesions, or fatty degeneration of the heart 

 should, therefore, not be exposed to the risk of acquiring 

 malaria. The mortality from malaria in chronic alcoholic 

 subjects, and in persons with beri-beri, is probably due 



