It was at five-thirty when the men busy with the cylinders turned on little taps. There was a faint hissing noise, the escape of gas from many pipes. A heavy, whitish cloud came out of the cylinders and traveled aboveground as it was lifted and carried forward by the breeze. “How's the gas working?” asked a Scottish officer. “Going fine!” said an English officer. But he looked anxious, and wetted a finger and held it up, to get the direction of the wind. Some of the communication trenches were crowded with the Black Watch of the 1st Division, hard, bronzed fellows, with the red heckle in their bonnets. (It was before the time of steel hats.) They were leaning up against the walls of the trenches, waiting. They were strung round with spades, bombs, and sacks. “A queer kind o' stink!” said one of them, sniffing. Some of the men began coughing. Others were rubbing their eyes, as though they smarted. The poison-gas... The wind had carried it half way across No Man's Land, then a swirl changed its course, and flicked it down a gully, and swept it right round to the Black Watch in the narrow trenches. Some German shell-fire was coming, too. In one small bunch eight men fell in a mush of blood and raw flesh. But the gas was worse. There was a movement in the trenches, the huddling together of frightened men who had been very brave. They were coughing, spitting, gasping. Some of them fell limp against their fellows, with pallid cheeks which blackened. Others tied handkerchiefs about their mouths and noses, but choked inside those bandages, and dropped to earth with a clatter of shovels. Officers and men were cursing and groaning. An hour later, when the whistles blew, there were gaps in the line of the 1st Division which went over the top. In the trenches lay gassed men. In No Man's Land others fell, swept by machine-gun bullets, shrapnel, and high explosives. The 1st Division was “checked.”... “We caught it badly,” said some of them I met later in the day, bandaged and bloody, and plastered in wet chalk, while gassed men lay on stretchers about them, unconscious, with laboring lungs. VIII Farther south the front-lines of the 15th (Scottish) Division climbed over their parapets at six-thirty, and saw the open ground before them, and the dusky, paling sky above them, and broken wire in front of the enemy's churned-up trenches; and through the smoke, faintly, and far away, three and a half miles away, the ghostly outline of the “Tower Bridge” of Loos, which was their goal. For an hour there were steady tides of men all streaming slowly up those narrow communication ways, cut through the chalk to get into the light also, where death was in ambush for many of them somewhere in the shadows of that dawn.