Relayed from Leeds
MR. NORMAN, WALKER'S next to last talk in this series, concerns the everlasting miracle of the blood-stream-no less a miracle now that biologists have revealed most of its secrets. The nature of blood; the danger of the blood. stream ; the clotting of blood; blood serum; venous and arterial blood-these are some of the points that Mr. Walker, by word and by experiment, will elucidate.