Daguereian or Daguerreian: How To spell?
The word Daguereian is misspelled against Daguerreian, an adjective meaning "Pertaining to Daguerre, or to his invention of the daguerreotype."
Daguerreian has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings dague & eian which should not be misspelled with single 'R'
Wrong Spelling:  dague-r-eian  Correct Spelling:  dague-rr-eian 
Check more misspelled words of Daguerreian to spell it correct.