The important events from the chapters from 11-19 are
1)George waking up early morning
2)They visiting the island of Magna Charts and also the passing of the three friends among many beautiful places,
3)The three friends getting a place to spend their night(cottage)
4)The remembering incident of the author about an incident about Montmorency in the lobby of Haymarket stores.
5)The preparation of Irish stew.
6)The fishing incident.
7)Their fight on who works hard
8)The friends finding the dead body of a woman.
9)The situation when the nose of the boat got stuck.
10)Their returning journey.