Oldoinyo Lengai in Northern Tanganyika was last active in 1940 and the larva within its core is still bubbling merrily away; . . . .

The pattern of animal life in East Africa has been so broken up that, apart from the information in Blayney Percival's two books (A Game Ranger's Note Book and A Game Ranger on Safari), we know almost nothing of what migrations may have occurred amongst the various species of mammals that we see inhabiting a particular area today (1962).