Update:

Jack is sitting up and saying, "ga- ga- ga- " with the emphasis on the "-g" sound. He tells everyone his story. He is also getting very strong. He loves to jump in his jumper and will stay in it up to a half an hour at a time. He likes to sit up, roll over and is a great sleeper. However, there is no mistaking when he has had enough of something, like right now so I need to go.

More later...