WWhat did the pirates finds at the foot of a large tree? What did the men do after that?

As the pirates begin their treasure hunt, the whole party heads toward the tall tree on the shoulder of Spyglass hill, which is the landmark cited in Flint's note on the back of the treasure map. As the men journey, Jim and Silver trail slightly behind, with Jim sometimes giving the one-legged man a hand so he does not fall. Suddenly, the man who is ahead of the rest of the group cries aloud and everyone runs toward him. They find a human skeleton lying at the foot of a tall pine tree in a perfectly straight, unnatural position, his feet pointing in one direction and his hands, raised over his head, the opposite direction. Silver believes that he man's body has been placed that way to serve as a compass, and, after checking their own compasses, they believe this to be correct. After closer examination, Silver believes that the skeleton is one of the pirates that Flint killed, someone they recognize as Allardyce. They notice that although most of the clothing has rotted away, none of the possessions that may have been in the man's pockets are lying around. The men feel haunted by the spirit of cold-blooded Captain Flint and walk closely together as they head toward the treasure.