Daguereotyping or Daguerreotyping: How To spell?
The word Daguereotyping is misspelled against Daguerreotyping, which is present continuous of "Daguerreotype"
Daguerreotyping has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings dague & eotyping which should not be misspelled with single 'R'
Wrong Spelling:  dague-r-eotyping  Correct Spelling:  dague-rr-eotyping 
Check more misspelled words of Daguerreotyping to spell it correct.