“….It has been suggested to me that now that you have had those two directions you may be able to reach your verdict in a comparatively short time and would prefer not to walk all the way back to the room where you have been and walk all the way back again. Would you be content to be left by yourselves in this courtroom, I having given you those further directions or would you prefer to walk back to the room where you have been deliberating heretobefore?”