YELLOW FEVER. 435 



ing it with the same power, I found that while the 

 blood-corpuscles had disappeared, these pseudo-bac- 

 teria still remained, showing that they were at- 

 tached to or imbedded in the thin glass cover. I 

 have since examined numerous glass covers that 

 had been thoroughly cleaned by means of nitric 

 acid, first, and distilled water or alcohol afterwards, 

 and not infrequently I have found these same 

 objects, which are only to be seen by the use of 

 high powers. 



But this is perhaps an unwarrantable digression, 

 and I proceed to quote from the author mentioned : 



" These same elements were found in the vomited 

 matter, having a white or greenish -yellow color, being 

 especially abundant in large mycelial threads. In some 

 cases there were ovoid cells, which appeared to be 

 due to the alcoholic fermentation described by Pasteur. 

 In these liquids, the spherical, yellow and elementary 

 granules suffered the same changes as already noticed 

 in the urine. The black vomit sediment appeared to be 

 formed for the greater part of blackened mycelial threads, 

 and other bodies of different forms and sizes, also black. 

 There were also present yellow or greenish threads and 

 elemental granules." 



To this fungus of many forms and many colors 

 the discoverer has given the name " Peronospera 

 lutea" 



The writer failed to find anything corresponding 

 with this description in his examinations of blood, 

 urine, and black vomit, while in Havana, but reports 

 as follows : 



