Slade moved a few yards along the dam. Lennon drew back his rifle, looked carefully at the lock and magazine, and took up a position from which he could fire with the greatest rapidity. He had been ready only a few minutes when from the irrigation canal, down the valley behind the Apache riflemen, came the reports of three shots, fired in rapid succession.

A fourth shot roared from Slade's rifle. Lennon began to fire as fast as he could take aim. His mark was the group of Apaches on the cliff foot. One fell and lay motionless. Another tumbled over, but rebounded to join in the dash of his companions down the slope.

The bare ledges of the cliff foot offered no shelter. The nearest cover was the ruined Farley ranch hut, a hundred yards or more away, in the direction of the reservoir. But as the Apaches raced for the refuge first one of their leaders and then another pitched to the ground.

The others swerved and went flying out toward the irrigation canal. A burst of shots from the canal again forced them to swerve. They fled toward a patch of rocks and cactus in the direction of Devil's Chute. Only four reached the cover.

As Lennon had emptied his magazine during the first few seconds, he knew that he could not have shot more than one of the fugitives. The three Navahos had spread out along the canal, and Pete had hidden at the ruined hut. They had the Apaches under fire from flank and rear. Slade had dodged down to run around the head of the reservoir and leap the inlet canal.

The thwack and screech of a glanced bullet that flicked a spurt of gravel into Lennon's face, warned him that the Navahos were not doing all the firing. Though so many of the Apaches had been killed in the surprise of the counter attack, the survivors of the band still outnumbered the rescuers two or three to one.

Lennon knew enough to creep back under the round of the dam. Once safe below the crest, he sprinted after Slade at top speed. He was under cover until he leaped the inlet canal and skirted along the natural rock rim on the far side of the reservoir.

The problem now was to find a sheltered way from the brink of the rim over and down into the Farleys' kitchen garden. Slade had somehow made the crossing. He was safe in a position of vantage at the goat pens.

Before Lennon could locate the sheltered line of descent he noticed that some of the shots sounded from farther down the valley. His first thought was that more Apaches were coming to join in the fight. Slade's reinforcements from the pueblo could not be expected before late in the day.

For a moment the situation appeared truly desperate. The odds were already heavy enough, without the addition of more Apaches. But a cautious peep over the rock rim disclosed to Lennon the happy truth. Out-manœuvred and cut off from the best cover, the Apaches were beginning to fall back down the valley.