“Spurted, sir,” said Dr. Kemp.

In another moment the higher of the villas that had clambered up the hill from Burdock had occulted the running figure. He was visible again for a moment, and again, and then again, three times between the three detached houses that came next, and then the terrace hid him.

“Asses!” said Dr. Kemp, swinging round on his heel and walking back to his writing table.