outside reading

I am reading treasure Island for my outside reading project. I am enjoying this book so far. I got right into the book because of what the books characters and story where about, which is pirates. The main literary element in the story is imagery. This is pretty obvious because of how the author describes everything in great detail with the use of imagery. i believe the book was written in this manner because of how people didn't live in the time where pirates existed so the authors uses the imagery to give you a sense of what it is like. I'm not sure yet of what the tone is yet because i haven't gotten that far into the book yet.