Let us walk across to it together. Until we are almost touching it we recognize nothing but a shattered tree-trunk. On closer inspection we find that what appeared to be the bark is only a good paper imitation of bark, and its irregular upper end has been made by hand, not, as we had supposed, by the impact of a shell. Behind the tree, at its root, is a passageway down which we go to find ourselves actually entering the trunk through a small door. Looking up we see a perfectly made steel cylinder, up which steps lead to the top. Here a seat is placed and an observer may look through a small slit in the steel casing and through a split in the imitation bark, getting a good view of things far in advance. This is the explanation of this strange affair: A large tree which stood upon this spot had been shattered by a shell, the shattering having taken place when the Germans held Vimy Ridge. This shattered tree was only four hundred yards from the enemy front line. Months before the Battle of Vimy Ridge some quick-minded engineer noticed this tree, and the idea occurred that it could be utilized to good advantage. The steel frame was made and covered in exact imitation of the tree trunk, all other arrangements made, and one night the tree was removed and this counterfeit of it was put up. When day broke an observer was sitting comfortably in this strange observation post looking out upon the enemy trenches, watching the movements of the Germans, at the same time being safe from any danger except the straight hit of a shell. Now let us return to our biscuit box and see what else there is of interest. All about are sitting boys with red crosses on their sleeves. They are stretcher bearers for a field ambulance. Here and there is a gun position from which a bang and a flash come spasmodically, as the guns throw their lead and steel souvenirs at the Germans. To our right as we face the enemy lines is a much used road, up which we can see motor lorries by the score pouring forward their loads of ammunition. Then there are packmules, motor cyclists, ambulances and--a strange sight--cavalry are going forward. Is the war changing from the old trench warfare of the past three years into open warfare of the past century? Ah! There is still another sight, and a pleasant one. It is a group of German prisoners going to the rear, guarded by a couple of Tommies. Word comes back that the attack which began some hours ago, and at which the guns are still mumbling and rumbling in anger, has been a success; the objectives have been reached and many prisoners taken, though the Huns are making a stiff stand of it. Overhead aeroplanes are humming to and fro, looking far in advance of our troops, seeing the effects of our gunfire, signaling instructions to our artillery, watching the movements of the enemy, and generally acting as the eyes of the army.