Again adjusting his sights he took a long-range shot at a distant
machine-gun crew to his right. With calm deliberation he wiped them
out to a man. Two guns were silenced. He saw men running through
the trenches and he picked off several of them. By this time the
Germans were aware that something was amiss--that an uncanny sniper
had discovered a point of vantage from which this sector of the
trenches was plainly visible to him. At first they sought to discover
his location in No Man's Land; but when an officer looking over
the parapet through a periscope was struck full in the back of the
head with a rifle bullet which passed through his skull and fell
to the bottom of the trench they realized that it was beyond the
parados rather than the parapet that they should search.

One of the soldiers picked up the bullet that had killed his
officer, and then it was that real excitement prevailed in that
particular bay, for the bullet was obviously of German make. Hugging
the parados, messengers carried the word in both directions and
presently periscopes were leveled above the parados and keen eyes
were searching out the traitor. It did not take them long to locate
the position of the hidden sniper and then Tarzan saw a machine
gun being trained upon him. Before it had gotten into action its
crew lay dead about it; but there were other men to take their
places, reluctantly perhaps; but driven on by their officers they
were forced to it and at the same time two other machine guns were
swung around toward the ape-man and put into operation.

Realizing that the game was about up Tarzan with a farewell shot
laid aside the rifle and melted into the hills behind him. For many
minutes he could hear the sputter of machinegun fire concentrated