The Times of Friday publishes an account of the manufac-
ture of these gases and the creation of a poisoned zone, which shows that Sir John French was perfectly justified when he spoke of the "long and deliberate preparations for the employment of devices contrary to the terms of the Hague Con- vention." The gases, which were so heavy that they descended into every depression of the ground, were, we are told, emitted from cylinders which were sunk in the German trenches, and to which were connected pipes six feet long pointing in the direction of the Allies. So poisonous were the gases that, though the Germans who managed them were supplied with respirators, a number of the men working the apparatus were asphyxiated. When the cylinders were emptied they were sent bank to the rear to be refilled.