CHAPTER XII
THE TUNNEL
The baby was screaming, the little boy of four or five looked miserably unhappy, and the worn and meager-looking mother was plainly frightened out of her wits. She let the baby scream on the seat beside her while she held the little girl in her lap.
That youngster seemed to be the least disturbed of any of the party. She was a pretty child, and robust. She kicked vigorously against being held almost upside down by her mother (as though by that means the dose of poison could be coaxed out of the child) but she did not cry.
"The little dear!" cooed Betty, pushing through the ring of other passengers. "What has happened to her?"
"She'll be dead in five minutes," croaked a sour visaged woman who bent over the back of the seat to stare at the crying baby without making an effort to relieve the mother in any way.
"What is the poison?" demanded Betty excitedly.
"It—it's I don't know what the doctor
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