What observations do the older members of the tribe make about Ishi?

Elder Uncle sometimes calls Ishi "Younger Brother" because Ishi is now as tall as his own father was. Grandmother and Grandfather also compare him to his father, saying that Ishi walks like him and shoots an arrow just like his father. Grandmother also states that Ishi has become very handsome, reminding her of Grandfather when he was younger. All of these comments lead to one conclusion: Ishi has grown up physically.