KOAD Fr.OM PEETOEIA TO DELAGOA BAY. 167 



actual saving remedy ; but none of them died, and I think 

 the presumption is in favour of the ammonia " (pp. 79-80). 



" We heard from a farmer we met during the day that 

 Andreas Duvenage (commonly called Devenaar) knows 

 of a safe road through the fly, between Blauwberg and 

 Zoutpansberg " (pp. 80-81). 



" Duvenage lives 18 miles to the north [of Mara- 

 bastad] and has the best known road through the Tsetse ; 

 he crosses the Limpopo at Commando Drift, meeting only 

 one patch of fly, which he rides through in the night '* 

 (p. 84). 



" The fly leaves a country if the game is driven out or 

 the bush cut away, but retui'ns if the conditions again 

 become favourable to its existence " (p. 89). 



Road from Pretoria to Delagoa Bay. — " Here it may 

 be considered that the descent of the Drakensberg proper 

 has been completed, and the lower ranges of the Makond- 

 shwa and Lobomba have to be crossed. The road, however, 

 passing through by a tolerably level poort or valley south 

 of the Umbolosi or Dundar River, and immediately after 

 passing the last range, the Tsetse-fly, fatal to domestic 

 cattle, and the fever, no less deadly to man, await the 

 traveller. Fortunately thei'e is only about 40 miles of 

 this unhealthy country ; but the fact should be known, in 

 order that the risk may be guarded against by pushing 

 through it as rapidly as possible, and at night or during 

 a cold day, when the fly is dormant " (p. 108). 



" It must be remembered, however, on the other hand, 

 that from the Lebomba (sic) mountains to the port, a 

 distance of 30 or 40 miles, lies the tract of low country 

 from which Delagoa Bay derived its not undeserved 

 reputation for unhealthiness. A considerable portion of 

 this strip is infested by the Tetse-fly, and a point to be yet 

 proved is whether this belt of fly is suflficiently narrow 

 to be passed through in one night. . . ." (p. 109). 



Appearance of Tsetse-flies ; symptoms of the disease in 

 cattle and horses ; remedies. 



" The Tsetse is little more than half an inch long, and 

 rather more slender than a common house-fly. The abdo- 

 men is marked with transverse stripes of yellow and 

 dark chestnut fading toward the centre of the back, so 

 as to give the idea of a yellow stripe along it ; the belly 



