Mrs.Field sat all the while in her place with her bag in her lap, and never stirred.

There was a look of rigid preparation about her, as if all her muscles were strained for an instant leap.
Two young girls in an opposite seat noticed her and tittered.

They had considerable merriment over her, twisting their pretty silly faces, and rolling their blue eyes in her direction, and then averting them with soft repressed chuckles.
Occasionally Mrs.Field looked over at them, thought of her Lois, and noted their merriment gravely.

She never dreamed that they were laughing at her.

If she had, she would not have considered it twice.
It was four o'clock when Mrs.Field arrived in Boston.