FEVERS. 591 



urinary secretion. The urine, from being high-coloured, and 

 seemingly saturated with matter, all at once is changed to a 

 limpid, colourless, and inodorous state. This has been, since 

 the time of Hippocrates, considered as a symptom of actually 

 formed Phrenitis, or of a Delirium phreniticum. It shows that 

 there is some constriction prevailing in the branches of the des- 

 cending aorta, and hence a greater determination of blood to- 

 wards the head ; and it may in part be explained in this way, but 

 I consider it more distinctly as a mark of some irritation applied 

 to the nervous system more generally. I should not pass it 

 over, however, without saying that the limpid urine is not al- 

 ways the bad symptom that Hippocrates supposed it to be. 

 But I reserve the more particular consideration of this subject 

 till I come to speak of the urine more fully. These are the 

 symptoms that express an irritation applied to a certain part of 

 the system, the brain especially, while there are other powers 

 of debility, acting in the same part, and preventing the effects 

 of the irritation from appearing so considerable over the whole 

 sanguiferous system ; and wherever that is the case, the symp- 

 toms of debility that are joined are more full presages of death. 11 

 CV. Lastly, The symptoms denoting the putrescent state of 

 the fluids, are, 



1. With respect to the stomach ; the loathing of animal food, 

 nausea, and vomiting, great thirst, and a desire of acids. 



2. With respect to the fluids ; 1. The blood drawn out of 

 the veins not coagulating as usual. 2. Hsemorrhagy from dif- 

 ferent parts, without marks of increased impetus ; 3. Effusions 

 under the skin or cuticle, forming petechiae, maculae, and vibi- 

 ces ; 4. Effusions of a yellow serum under the cuticle. 



3. With respect to the state of the excretions ; fetid breath, 

 frequent, loose, and fetid stools, high-coloured turbid urine, fetid 

 sweats, and the fetor and livid colour of blistered places. 



4. The cadaverous smell of the whole body. 



CVI. These several symptoms have very often, each of them 

 singly, a share in determining the prognostic : but more espe- 

 cially by their concurrence and combination with one another, 

 particularly those of debility with those of putrescency. 



CVII. On the subject of the prognostic, it is proper to ob- 

 serve, that many physicians have been of opinion, there is some- 



