YELLOW FEVER. 441 



Havana, the writer paid very little attention to 

 post mortem blood ; but it was noticed that in blood 

 drawn during the last hours of life the serum was 

 tinted yellow, and the red corpuscles were paler 

 than normal from a loss of haemoglobin. Any 

 albuminous granular material in post mortem blood 

 from disintegration of the corpuscles, etc. 

 would therefore be likely to be stained yellow by 

 this pigment. 



Hinernan, a very competent German physician 

 practising in Vera Cruz, has not been more success- 

 ful than the writer in finding the Peronospera lutea of 

 Carmona, or the Cryptococcus Xanthoyenicus of Freire, 

 in the blood of yellow fever patients, before death. 

 He examined the blood of patients in the last 

 stage of the disease, taking blood from the hand, 

 thinning it with artificial serum, and bringing it at 

 once under the microscope. He says : " In nine 

 cases so examined not the slightest deviation from 

 normal blood could be found. . . , No organisms 

 were found." * 



1 Arch. f. path. Anat. LXXVIII. p. 139. 



