"Oh! let me in," panted poor Netty; "do, please, and I ain't Susy—I'm Netty, and this ain't my little cousin—he's my own brother, and he's bad, very bad. Oh, ma'am, I'm such a miserable girl!"

In great astonishment Mrs. Holmes did allow the little girl to come into the house. She took her into a small room and looked at once at the baby. One glance showed her that he was very ill indeed.

"My dear child," she said, "what a good thing you came when you did. In an hour's time the poor baby might have died."

Mrs. Holmes rang the bell briskly.

"Bring a hot bath here and some mustard immediately," she said to the servant; "and be quick, please, and then go round to Dr. Ross at the corner and say that Mrs. Holmes wants to see him at once."

"Why, Susy! what is the matter?"

All these things were done. The baby was taken out of Netty's arms, undressed, and put into the bath. The doctor called, felt his little swollen gums, and said they were really at the root of the mischief. He lanced them and the baby got immediate relief. In less than an hour he was lying in a soft sleep in Netty's arms.

"He will do now," said Dr. Ross; "but if matters had been postponed I would not have given much chance of his life."