ANALYSIS OF BLACK VOMIT. 



131 



black vomit, recently obtained, were evaporated over a 

 moderate heat, in order to obtain the flaky fubftance. 

 During this experiment, Mr. Parker held his head over 

 the veflel for fome minutes, (o as to inhale the fteam of 

 black vomit ; after which, we continued within two 

 yards of the veflTel, without experiencing anv unpleafant 

 efFed. 



{e) The following day, I caufed the windows and 

 doors of a room to be clofed, and the fame experiment 

 was repeated on a fand-bath, conftrudted in the middle of 

 a room. The fluid was evaporated until the atmofphere 

 was fo impregnated with the effluvia of the vomit, as to 

 render the apartment extremely unpleafant, not only from 

 the odour ot the vomit, but the warmth of the room. In 

 this atmofphere, I remained one hour ; during which, I 

 had a conftant propenfity to cough, and had, at times, 

 naufea and inclination to vomit ; but, after walking out 

 in the air, thefe effeds gradually fubfided. I experienced, 

 however, a fenfe of wearinefs at my cheft for many hours 

 after. 



From the above experiments, it appears that the black 

 vomit, when applied to the molt fenfible parts of the 

 body, produced little or no effe£t. 



Secondly, It appears that large quantities of this fluid, 

 may pafs through the fl:omach and bowels of quadrupeds 

 and other animals, without apparently difturbing digef- 

 tion, or affeding their health. This fad incontefliibly 

 proves the inadivity of this fluid ; and renders it proba- 

 ble, that the fpeedy death which enfues, after this dif- 

 charge in yellow-fever, is not from the defl;rudive effeds 

 of this matter on the ftomach and bowels ; but, moft 

 likely from the great degree of dired or indired debility, 

 which had been previoufly induced, on which the black 

 vomit is fometimes an attendant, and flrongly expreflfes 

 the great danger to be apprehended from the enervated 

 ftate of the fyftem. 



Laftly, 



