"He made a nice calculation that, from his superior agility and dexterity, one monkey ought to pick as much cotton as three negroes. With a negro to set the example the monkeys would follow the rows in the field, pick the cotton from the bush, and put it in the bag or basket, just as the negro did. One negro could manage ten monkeys and show them how to pick the cotton, and his twenty-five monkeys would be equal to seventy-five men. Besides, the labor of the negroes would count just the same as usual, since they would have nothing to do but pick the cotton and let the monkeys see how it was done. "The monkeys arrived a couple of weeks before the picking season began, and for all that time the negroes around the plantation did nothing but play with their new friends. When the work began the planter found he was sadly out in his calculations. "Instead of one negro managing ten monkeys it took at least ten negroes to manage one monkey, and even under this supervision the beast would not pick a pound of cotton in a day. The whole enterprise failed completely, and the monkeys--such of them as could be caught and re-caged--were sold to a travelling menagerie, at a great discount from first cost." [Illustration: CAMP ON THE EDGE OF THE MAKATA SWAMP.] One of the terrors of the road between Unyamyembe and Zanzibar is the Makata Swamp--a plain some forty miles wide, with the Makata River running through it. When dry there is no particular difficulty in crossing it, but in the season of rains it is a disagreeable expanse of mud, in which animals and men suffer greatly. Our party reached the edge of the swamp, and went into camp there for a couple of days, to give the men a good rest, preparatory to a long march. It rained on the day of their arrival; but the days in camp were pleasant, and the heat of the sun caused the water to disappear from the most of the hollows where it had accumulated. When they again moved forward the ground was in fairly good condition, though there were many elephant and rhinoceros tracks in the soft earth, some of them two or three feet deep. The donkeys and men occasionally slipped into these holes, and considerable time was lost in unloading the donkeys, to get them out of their troubles. They reached the river about dark, and the guide wanted to camp before crossing; but Doctor Bronson insisted upon getting everything on the other side at once, for fear it might rain during the night and swell the river to an inconvenient degree. There was a rough bridge over the river, which was practicable for men, but impassable for the donkeys. The little fellows were unloaded and compelled to swim the stream, much against their will, while their burdens were carried over the bridge by the porters. Everything was taken over safely, but it was long after dark before the crossing was accomplished.