he recognized in the new note almost a supplication—it was more like the whine of a hungry dog begging for food than the voice of the proud king of beasts.
"Soon you will kill—and feed," he murmured in the vernacular of the great apes.
He unfastened the rope from about the tree and, with Numa close at his side, slunk into No Man's Land. There was little rifle fire and only an occasional shell vouched for the presence of artillery behind the opposing lines. As the shells from both sides were falling well back of the trenches they constituted no menace to Tarzan; but the noise of them and that of the rifle fire had a marked effect upon Numa who crouched, trembling, close to the Tarmangani as though seeking protection.
Cautiously the two beasts moved forward toward the listening post of the German's. In one hand Tarzan carried the bomb the English had given him, in the other was the coiled rope attached to the lion. At last Tarzan could see the position a few yards ahead. His keen eyes picked out the head and shoulders of the sentinel on watch. The ape-man grasped the bomb firmly in his right hand. He measured the distance with his eye and gathered his feet beneath him, then in a single motion he rose and threw the missile, immediately flattening himself prone upon the ground.
Five seconds later there was a terrific explosion in the center of the listening post. Numa gave a nervous start and attempted to break away; but
