64 PHYSIC 



portion, and, when locally observed in thin skinned indi- 

 viduals, the paleness may often be seen to be confined to 

 one or more terminal arborisations, to a group of associ- 

 ated peripheral nerve expansions, or to the specially 

 distributed terminal nervature of the skin generally. 

 Thus, on the more exposed surfaces of those who show 

 this anatomical peculiarity, each nerve terminal displays 

 its final histological breaking up in the form of single, 

 dual, triple, or multiple, circular, oval, or irregular, but 

 distinctly outlined, ivory coloured, glistening or faintly 

 transparent, ring-like shapes showing in slight relief above 

 the prevailing more rouge haemal vasculature. At first 

 this surface marking has to be carefully looked for, even 

 in a good specimen, but when once seen, and when the eyes 

 have been familiarised "to the sight," there is very little 

 difficulty in detecting, even in the worst specimen, traces 

 of this manner of the terminal distribution of the sensory 

 nerves and blood vasculature respectively. That the 

 power to observe the manner of the terminal distribution 

 of the sensory nervature of the skin can aid us in diag- 

 nosing a neural from a haemal eruption goes without 

 saying, as the most elementary scrutiny, by the initiated, 

 of the cutaneous disposal of its details, will show whether 

 the eruptive display conforms most to the outlines of the 

 neural terminals or to the more indefinite capillary ele- 

 ments of the blood vasculature, or whether it involves 

 both. 



As we have said before, we are convinced, from our 

 analysis of the eruptive phenomena displayed by the 

 exanthematous fevers and the non-febrile eruptive dis- 

 orders generally, including many forms of neuritis and 

 dermatitis, that differentiating the neural from the haemal 

 varieties will enable us to dictate a treatment at once more 

 scientific, and likely to be successful, than that only based, 

 at the best, on the sifted empiricism "of the ages": 

 moreover, justified by this analysis, we claim once more 

 that a much larger proportion than is usually supposed 

 of the eruptive diseases will be found to have been incu- 

 bated in, and to have secondarily invaded, the so-called 

 non-nervous structures of the body from the cerebro-spinal 

 cavity, and that, therefore, it will be found that their 



