Contact with native populations is rarely an even exchange, natives are always exploited in some way.
Answer:
look for key words like me i we, for first person then he she they, for 3rd person, itll change how the story is told
The author Mary Shelley use the word chimerical in that line because she said that the powers of Cornelius Agrippa were improbable and because she wanted to say this in a fancy way.
Hope this Helps :)
BTW, Mary Shelley is the author of Frankenstein <span />