Final answer:
The author foreshadows Mr. Talbot's position as a member of the Population Police through clues in the text such as his awareness of policial modes of action and the anticipation of waylayings.
Step-by-step explanation:
The author foreshadows Mr. Talbot's position as a member of the Population Police through various clues in the text. For example, in the excerpt, the author mentions that Mr. Talbot is aware of the ordinary policial modes of action and anticipates the waylayings he is subjected to. This suggests that Mr. Talbot has knowledge and experience with law enforcement activities. Additionally, the mention of Mr. Talbot's frequent absences from home at night, which are seen as ruses to allow thorough searches by the police, further hints at his involvement with the Population Police.