found him except once, when one of our look-outs saw something crawling across that field about midnight and promptly emptied his magazine. In the morning they saw a grey figure lying out in the open; the days passed and the long grass sprang up and concealed it till nothing was left to attest its obscene presence except a little cloud of black flies. Their horizon is bounded by rows of sand-bags, and their interest in those sand-bags is only equalled by their interest in the field in front of them. Occasionally one of our men finds them more than usually interesting. There is a loud report, the click of a bolt, and the pungent smell of burnt cordite. Then all is still again. The tangent-sight on the standard of their machine-gun is always at 200, and they have not altered the range for three months. Occasionally at night the N.C.O. seizes the traversing-handles, and with his thumb on the button slowly sweeps that range of sand-bags, till the feed-block sucks up the cartridge-belt like a chaff-cutter and the empty cartridge-cases lie as thick round the tripod as acorns under an oak. The Huns reply by taking a flashlight photograph of us with a calcium flare, and then all is still again. In such excursions and alarms do they pass the long night. Though five-sixths of them slept stertorously in their holes by day, by night they were as wakeful as owls, and not less predatory. Life in the trenches is one long struggle for existence, and in the course of it they developed those acquired characteristics whereby the birds of the air and the beasts of the field maintain themselves in a world of carnage. They learnt to walk delicately on the balls of their feet as silently as hares, to see in the dark like foxes, to wriggle like the creeping things of the field, to lower their voices with the direction of the wind, to select a background with the moonlight, and to stand motionless on patrol with muscles rigid like a pointer when the star-shells dissolved the security of the night. They studied to dissemble with their lips and to imitate the vocabulary of nature. They grew more and more chary of human speech, and listening posts talked with the trenches by pulls on a fishing-reel. They never sheathed their claws, and working-parties wore their equipment as though it were the integument of nature. Bayonets were never unfixed unless the moon were very bright. At night they scraped out their earths like a badger, and, like the badger's, those earths were exceeding clean. The men were numbered off by threes from the flank, and one in three watched for two hours while the other two worked, repairing parapets, strengthening entanglements, and filling sand-bags. Every half-hour the N.C.O. on duty crept round to report, or to post and relieve, while now and again a patrol went out to observe. All this was done stealthily and with an amazing economy of speech. Night was also the time of their foraging,