The charities of Nairobi were much richer because of Mr.Boyce and his African Balloonograph Expedition.
While in Nairobi we visited the little station where experiments are being made in the "sleeping sickness." An intelligent young English doctor is conducting the investigations and great hopes are entertained of much new information about that most mysterious ailment that has swept whole colonies of blacks away in the last few years.
In many little bottles were specimens of the deadly tsetse fly that causes all the infection.

And the most deadly of all was the small one whose distinguishing characteristic was its wings, which crossed over its back.

These we were told to look out for and to avoid them, if possible.

They occur only in certain districts and live in the deep shade, near water.

They also are day-biting insects, who do their biting only between eleven o'clock in the morning and five o'clock in the afternoon.
In the station there were a number of monkeys, upon which the fly was being tried.