Bessie looked at her baby sister and then at her mother. Mamma's face troubled her even more than the baby's did, and she felt as it she must do something to comfort her. She laid her hand gently on her mother's shoulder, and said, "Dear mamma, don't you want to have a little angel of your own in heaven?" Mamma gave a start and put her arm farther over the baby, as if she thought something was going to hurt it. Papa stopped his walk and Bessie went on,--