Sylogistical or Syllogistical: How To spell?
The word Sylogistical is misspelled against Syllogistical, an adjective meaning "pertaining to a syllogism; consisting a syllogism, the fm reasoning by syllogisms; as, syllogistic arguments reasoning."
Syllogistical has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings sy & ogistical which should not be misspelled with single 'L'
Wrong Spelling:  sy-l-ogistical  Correct Spelling:  sy-ll-ogistical 
Find more incorrect spellings of Syllogistical to spell right way.