What is in the letter Abraham left for Jason and how is Jason's situation changed by what he learns?

Abraham has left a letter for Jason explaining their plans. The brothers have taken every cent they own, including their inheritance, to try and make their fortune. Abraham says he was unable to contact Jason to secure his approval regarding their decision. Abraham tells Jason that the enterprise is for the entire family, and even though Jason will be with them only in spirit, the treasure they find will be split three ways. Jason also learns that in order to make the trip to Skagway, Abraham and Ethan have used his inheritance. Jason is now broke and stranded.