Short Summary:
Jonathan and everyone prepared their best for when Dracula arrives. Mina starts to act weird which gives them the hint Dracula is close, but not yet on shore. They could hear men outside and Mina shivered then came out of her trance cold and exhausted. No one would tell Mina of what just happened, instead they then took Mina to their hotel room, it's probably much safer there.
Important quote:
"You see, my friends. He is close to land: he has left his earth chest. But he has yet to get on shore." -Van Helsing (Page 365)
-This is important because it shows the reader about how far Dracula is and how soon he might be arriving.