She had gone out into the great main thoroughfare, the noise of which came dimly to Wistaria Terrace because of the huge mass of the church blocking up the way.
She had done her shopping and was on her way home, when, right in the track of the heavy tram as it came down the steep descent from the bridge over the canal, she saw a helpless bit of white fur, as it might well seem to anyone at a distance.

The thing was almost motionless, or stirring so feebly that its movements were not apparent.

Evidently the driver of the tram had not noticed it, or was not troubled to save its life, for he stood with the reins in his hand, glancing from side to side of the road for possible passengers as the tram swept down the long incline.
Mary never hesitated.

The tram was almost upon the thing when she first saw it.

"Why, it is Lady Anne's dog!" she cried, and launched herself out in the roadway to save it.