How far the eye carries in this clear transparent atmosphere, and what a wide tract of country we are able to overlook! In this tropical brightness, after weeks and months, and even years, I could not get rid of the perplexing illusion as to distances. The tract of country that my sight could command seemed always much less extensive than it really was. And again, we were continually being misled by shimmering reflections of the air, so that we took gnus for elephants, ostriches for rhinoceroses, zebras for wild asses, and we might even hold to our mistaken view for a considerable time. He who wants to watch the living animals in this way from a lofty point of observation, must be able to keep on persistently for hours. Thus only will the scene piece by piece become familiar to him. Thus only will all the moving life below him very gradually combine into one splendid and intelligible picture. [Illustration: _C. G. Schillings, phot._ ONE OF MY LOOK-OUT PLACES ON THE PLATEAU BETWEEN KILIMANJARO AND MOUNT MERU.] On the way to my look-out hill I pass thousands of the tracks made by wild animals. At the very outset, the traveller from northern lands sees a most surprising sight in those hundreds of thousands of tracks made by wild animals, and faithfully preserved for weeks and even for longer periods in the dry season on the plains of Africa. The giants of the animal world leave behind them their mighty footprints, often for nearly a year, holes in which a man will sometimes break his leg. But the footprints of the smaller animals also last a long time on velt and plain. And the language of the wilderness rises to a most effectual appeal to our senses when these tracks are associated with the marked tarry scent of the waterbuck in the bush, the breath of the great wild herds on the plain, the strong scent left by elephant or rhinoceros in the primeval forest and in the sultry thickets, and the scent of the buffalo among the reed-beds. There is often a chaos of tracks, a wild maze of paths trodden flat as a barn-floor, crossing each other, and then again uniting, so that the idea of tame herds, mentioned before as at times suggested, can no longer hold good. To-day we have again waited patiently to see the wilderness gradually come to life in the hours of the afternoon. And we have not been disappointed.