on  Air , See.  213 
Sir  JOHN  PRINGLE 'V,  Dl'.  LIND ^5  CLEGHORN (e\  See.  as 
alfo  by  my  own  reflexions  and  obfervations ; yet  I was 
pleafed  to  prove  it  in  my  own  ftudy,  and  to  be  able  to 
bring  it  to  the  evidence  of  the  fenfes.  It  is  not  a little 
fatisfaXory  to  prove,  by  modern  experiments,  the  truth 
of  obfervations  made  in  remote  antiquity. 
, A late  ingenious  author  {d\  from  experiments  made 
with  raw  flefh  fufpended  over  bogs,  finding  that  the 
effluvia  rather  retarded  than  haftened  putrefaXion,  ven- 
tures to  declare,  that  he  is  u even  inclined  to  doubt  of 
*l  their  (marfh  effluvia)  infalubrity  in  any  refpeX.” 
But  it  ffiould  be  remembered,  that  an  atmofphere, 
already  faturated  with  putrid  matter,  was  by  no  means  a 
proper  nienjlruum  for  taking  off  and  fufpending  a far- 
ther portion  of  putrefeent  matter. 
And  we  ought  to  confider,  that  niiafmata , reque  ac 
medicament  a,  non  agunt  in  cadaver . As  all  impreffions 
upon  our  fyftem  are  made  through  the  medium  of 
the  nerves,  no  motions  can  be  excited,  nor  farther 
inertia  liquidi  nervofi  be  produced,  in  bodies  diveff:ed  of 
nervous  energy.  My  experiments  prove,  that  marfh  efflu- 
via are  poifonous  to  a living  animal;  yet  they  may  pro- 
(a)  Difeafes  of  the  Army,  8vo. 
(b)  Eifay  on  the  Difeafes  incidental  to  Europeans  in  hot  Climes. 
( c)  Difeafes  of  Minorca. 
( d)  Experimental  Enquiry  into  the  Caufes  of  putrid  Difeafes. 
E e a A ably 
