So Bruce gave Apolo butterfly nets, and killing bottles, and envelopes; he gave directions about the exact way to set down all the facts, and he told how Apolo’s darky minions might pinch the flies without getting stabbed themselves. “And then we will put our findings down on this map--and see if I’m right.” Apolo was nothing if not intelligent, and efficient. He said he would see what could be done. There were bows and amiable formalities. In a jiffy the black Prime Minister had called for his head chief, the Sekibobo, and all the paraphernalia, with rigid directions, went from the Sekibobo to the lesser headmen, and from them down to the canoe men--the wheels of that perfect feudal system were set going.... Presently the envelopes began to pour in on Bruce and called him away from his monkey experiments. They cluttered the laboratory, they called him from his peerings into the intestines of tsetse flies where he looked for trypanosomes. Rapidly, with perfectly recorded facts--most of them set down by intelligent blacks and some by missionaries--the envelopes came in. It was a kind of scientific co-working you would have a hard time finding among white folks, even white medical men. Each envelope had a grubby assorted mess of biting flies, they had a dirty time sorting them, but every time they found a tsetse, a red-headed pin went into that spot on the map--and if a report of “sleeping sickness present” came with that fly, a black-headed pin joined it. From the impressive Sekibobo down to the lowest fly-boy, Apolo’s men had done their work with an automatic perfection. At last the red and black dots on the map showed that where there were tsetses, there was the sleeping death--and where there were no tsetses--there was no single case of sleeping sickness! The job looked finished. The unhappy monkeys bit by the flies who had sucked the blood of dying negroes--these monkeys’ mouths fell open while they tried to eat their beloved bananas; they went to sleep and died. Other monkeys never bit by flies--but kept in the same cages, eating out of the same dishes--those monkeys never showed a sign of the disease. Here were experiments as clean, as pretty as the best ones Theobald Smith had made.... VII