The word perfunctory appears on pg. 108. Perfunctory can best be defined as automatic. It appears in part 2.
Captain Beatty, his poker cards in one pink hand, walked with exaggerated slowness to the phone and ripped out the address when the report was finished. He glanced perfunctorily at it, and shoved it in his pocket. He came back and sat down. The others looked at him.
He is not really looking at it, in other words.
At this point, Montag has become very curious about books and Faber teaches him to read. He has tried to convince everyone that literature is not worthless with the poem “Dover Beach” but it does not seem to work. Montag returns to work and Captain Beatty, who seems to know what is going on. The next thing that happens is the return to Montag’s house where Montag eventually gets so frustrated he burns it down.