“And hark to those rhinos,” added his chum. “They must be having a great old time.” “A fight, probably,” said the sergeant. “They have a very thick skin, but when one rams another, those heavy, sharp horns make terrible wounds.” The noise at the water hole seemed to increase. The roaring of the lion became louder and then died away. It was almost silent for a time. “The lion has driven everyone else away,” explained the former soldier. “He drinks alone. When he leaves the others will come back and finish.” “Then let’s get there while the lion is drinking,” suggested Blake. “We want to film him.” They hurried on and, a little later, came to the water hole. The moon was just coming up, making a brilliant light, but of course not strong enough for moving pictures. “I guess this will do,” said Blake in a low tone, as he indicated a place where the camera might be set. “You look after that and I’ll ’tend the light,” offered Joe. “And we’ll stand by the guns,” suggested Mr. Piper. Thus it was arranged. They could see shadowy forms moving about near the water hole, but could not make out what animals they were. “Light up!” called Blake, when he had the camera set. “Light she is!” exclaimed Joe, and a moment later the scene was brilliantly illuminated. A strange picture was presented as Blake began to turn the handle of the camera. Somewhat back from the water hole were a number of baboons, sitting on their haunches, seeming to grin in their ugly fashion at some other animal. Some of the ape-like creatures were chattering angrily. Then came a growl, and the boys noticed a big lion slaking his thirst at the pool. “Old Mr. Leo drove the baboons away,” whispered Blake. “That’s right,” answered his chum. Their low voices did not disturb the lion, but the light did. Startled, the king of beasts looked up to see the cause of the flare. The baboons did also, but none of them ran away, as the boys feared would be the case. “Maybe they think it’s moonlight,” suggested Joe. “Queer moonlight,” remarked Blake; “but as long as they think so, it’s all the better for us,” and he continued to grind away at the machine. The slight clicking noise seemed to bother the lion at first, but, looking carefully about, and seeing nothing and, as the wind was blowing from him to the boys and he did not scent them, he seemed to conclude that everything was all right and went on drinking. Nor were the apes or baboons suspicious after the first few minutes. The lion finished drinking and walked slowly away, the camera registering every movement. Then the baboons, with shrill chatterings, came rushing back to the water. “Some pictures, these,” remarked Blake. “I should guess yes,” agreed his chum.