"You've put on considerable many frills since I been away." (page 31)
"We judged that three nights more would fetch us to Cairo..." (page 87)
The quote above is an example of colloquialism. It includes the word "frills", which meant having nice clothes or unnecessary embellishments in this time period.
The quote above includes the term "fetch" which is an example of colloquialism. In modern times, fetch means to go grab something. However, it means "to bring you to" in this phrasing. Fetch was a very popular term in this time period.