The conductor eyed them with some amusement.

'Where do you want to go?'

Bobby was silent, and so was True for a minute, then she said:

'We want to go to the place where they keep governesses.'

The three other passengers looked at the children in astonishment; the conductor laughed.

'Did your mother send you?' he asked.

True looked down upon her black frock and then up at him.

'Don't you know that mother is dead?' she said. 'That's what I wear my black frock for.'

'Do you know your way about London, little girl? You are very small to be out alone.'

It was the old lady who spoke.