Complex sentence: He continually pesters Dr Pym about his wages as it appears he doesn't receive any but his appearances in the class-room lead the boys, particularly Bottomly and Greenbottle, to imitate his voice.
Split into simpler sentences: He continually pesters Dr Pym about his wages as it appears he doesn't receive any. His appearances in the class-room lead the boys, particularly Bottomly and Greenbottle, to imitate his voice.