Many and interesting are the various sound-phenomena of the battlefield. Why is it, for instance, that once when a certain battery was firing over my head from behind a crest the rush of the shell was heard going away in an opposite direction, so that it seemed, at first, as if the breech had blown out; and that when I approached the battery the shells sounded as if they were going straight up in the air? Why is it that, from some positions, the shells from our own batteries are heard to give forth a crackling sound instead of the usual swirl when speeding over to the enemy? This last effect may occasionally be due to a badly centred shell, but, I think, not always. One is too busy in war-time to look into these interesting details, and in peace-time one has not the opportunity! I remember an occasion when the guns made a very effective accompaniment to a song. I was lunching below ground in an observation-post dug-out, and a very pleasant-voiced lady was singing to us from a gramophone. I forget what the song was, but the regular bang and whirr of a battery firing overhead certainly improved the effect. We shouted up to the observer to know if the shells were ‘ours’ or ‘theirs,’ and elicited the interesting information that it was the Germans who were supplying the accompaniment! The sound of the enemy shells is all too well known to most of us out here, but there appear to be not many who have actually seen one in the air. I have seen German shells coming towards me on two separate occasions, but have, so far, never met anyone who has had the same experience. This seems strange, for there is no reason why it should not happen fairly frequently. It is quite an easy matter to see one of our own shells leaving a howitzer, and sometimes a gun, if one stands straight behind it, and it should only be a question of happening to look in the right direction to see one coming the other way. It was in the spring of last year near ‘Windy Corner’ that I first saw a German shell on the wing. I had not been long at the front, and I instinctively looked up when I heard it coming. What I saw was a minute but very rapidly increasing speck in the sky, moving so fast that I was somehow unable to judge where it was going to fall. I accordingly made myself as small as possible, but it burst in a farm at the comparatively safe distance of some 150 yards. It was from a 15-centimetre howitzer, and was immediately followed by another, which I again saw by looking in the same direction. As this was followed by a flight of ‘whizz bangs,’ and as I had no pressing business there at the moment, I hurried from that well-known and unwholesome spot.