I went back to the deeper part of the pool, and as soon as I had made a cast, hooked one, whose first tug showed that he was a prize worth landing. I feared that I should lose him, as my tackle was hardly strong enough for a heavy catch, so I made up my mind to play him very gently and tire him out, if possible. Away he went and round spun the wheel. He hid under a ledge of rock, and I wound it gently. This started him again, and now he showed sport without a break for twenty minutes. After that, to my surprise, I brought him up quite close to a shallow, and then I saw that I had hooked a real monster and had a good chance of landing him. But it would be useless to try to get him ashore without help, and I shouted and shouted again; for all the time he was making dashes and stopping in exhaustion, and I was playing him in nearer to the shallow. At last one of our boys came to aid me, and I saw that he was eager to help—but the first thing that he did was to rush into the water and grab my line! I yelled to him to leave it alone and strove to explain what he was to do. The next time my prize came into the shallow his strength had nearly failed him, for he rolled over and showed his white belly. It was a moment of excitement when the black fellow slipped into the water and tried to catch hold of _the fish’s tail_. I did nearly lose him then, but he was almost spent; and after a great deal of shouting I made the boy understand at last that he was to put his thumbs into the fish’s gills on each side. At first he thought I wanted him to put his fingers into its mouth, and was afraid. It took two men to lift my fish on to dry ground, and I could hardly believe that the tackle had held him; I was using a small trout-rod. From snout to tail he measured forty-five inches, and he had a girth of thirty inches. We judged his weight to be between fifty and sixty pounds. This species (_lates niloticus_) is called by the natives “el baggar” (the cow). It has been described by Sir S. Baker, who also published in “The Nile Tributaries of Abyssinia” a drawing of a fine specimen which he caught in the Atbara. My photograph shows that the fish which I landed does not altogether correspond to his description. It may be that the Soudanese name covers more than one species, or there may be considerable variation among members of the same species, but I am inclined to think that the illustration in Sir S. Baker’s book was prepared from an imperfect sketch. During the morning we saw a troop of baboons. For a time they watched us. It was interesting to note their method of scouting. Here and there one would climb a tree, scan the surroundings sharply, and then descend quietly and join the main body. A few minutes later another would renew the observation from another tree. In this manner they keep a constant look-out. Mansfield Parkyns studied the habits of these creatures in Abyssinia and has given a most interesting account of them.