140 MAMMALS 



Fiske he found footprints, and later on I found abundant 

 evidence that Situtunga at least visit Nsadzi. I have 

 also found bushes browsed by them on Ngamba, between 

 Nsadzi and Kome, on which latter large island they abound, 

 so that it is probable they had crossed to Nsadzi from 

 Kome, using Ngamba as a stepping stone, for it is well 

 known that they swim readily. The importance of these 

 movements from the point of view of Sleeping Sick- 

 ness has already been discussed in Chapter II, pp. 

 28-29. 



The smallest island on which I have seen Enjobe is the 

 previously mentioned Nkosi, lying to the extreme south 

 of the Sesse archipelago, and very exposed. Several were 

 seen there on a visit (see p. 91), and areas of grass 

 were kept close cropped by their grazing. It seems 

 almost certain that they must swim to and from this 

 tiny island from the larger isles to the north. 



Otters. 



Otters abound in the lake, as might be expected, and 

 one is glad to feel that their numbers are steadily 

 increasing now that they can no longer be destroyed for 

 their skins by the islanders. There can be few animals 

 more beautiful than otters in the water ; they are so 

 lithe and graceful and sleek, and so full of the joie cle 

 vivre. I remember well one very hot day when I was 

 visiting the little islet Kizima. Looking down from the 

 top of a little cliff into the water I saw below some half 

 dozen otters sporting in the water and tying themselves 

 into knots, but in a very leisurely way, as if it was too hot 

 for much exertion. On another occasion off Tavu Isle 

 there were about a dozen, fishing and playing with their 

 catches in a very delightful sportive mood ; throwing 

 the fish up into the air and catching it again. One lay 

 on his back in the water in a most ludicrous attitude, 



