From: robertaw@drizzle.com   
      
   In article ,   
    Christian Weisgerber  wrote:   
      
   > On 2025-12-17, Bobbie Sellers  wrote:   
   >   
   > >> BTW, where did this trope start?  It appears early in _Perry Rhodan_,   
   > >> where genocidal wars between the two are part of the historical   
   > >> background, but nothing is ever original in _PR_.   
   > >   
   > > 	Methane breathers in the Lensman stories by Doc E.E. Smith.   
   >   
   > I seem to recall that there were various "poison gas" breathers and   
   > Smith was oddly unspecific about the makeup of their air.   
      
   IIRC, there were Chlorine breathers in _Skylark of Valeron_. And a   
   galactic empire of them in _Skylark Dequesne_.   
      
   --   
   "We have advanced to new and surprising levels of bafflement."   
   Imperial Auditor Miles Vorkosigan describes progress in _Komarr_.   
   ‹-----------------------------------------------------   
   Robert Woodward robertaw@drizzle.com   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)