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theory upon thefe obfervations of Morton, 
with this difference, that they rejedt the 
depravation of the animal fpirlts which 
this phyfician admitted, and inftead of it 
believe that miafmata affedf the nerves 
alone, and not their fluid. This dodtrine 
Is more Ample, more conformable with 
fadts, and with the recent difeovery of the 
nature of the nervous fluid. 
All medical men, however, are far from 
being convinced that the impreflion of 
miafmata is only made upon the nerves, 
and there are many who ffill retain the 
errors of the humoral pathology. If, not- 
withffanding, they would take the trouble 
of examining the hiflory of difeafes, they 
would fqon lay afide their prejudices. It 
would be the greateft poffible gratification 
to me to attempt a work with this view, 
but I muff not flatter myfelf that a phyfi- 
eian whofe reputation is confined within 
very narrow limits, would be able to per- 
fuade 
