What does Marcellus mean when he says, "the night is joint-labourer with the day"? what is the cause of all this labour?​

sre wassap?

explanation:

jenkins wanted the narrator to write a ghost story for his magazine. he wanted the narrator to give the readers a story based on the supernatural. he wanted him to give the readers real 'horror' stories and not the type of live ghosts which he had presented in his earlier stories.

may i know the title of the book?

so is this a rhetorical question?