sliort distance from the river palpalis disappears, its place being 

 taken by morsitans, and it appears to be a fact that along- tbe 

 wbole valley of tbe Lukuga tbe two species do not live together. 



G. morsitans is not uniformly distributed over tbe wbole 

 valley. It is very numerous on tbe level areas, but mucb scarcer 

 on very broken ground; at Xiluba and Milliminua tbe fly is not 

 only found near tbe villages, but actually witbin tbem. 



Tbe author bad no opportunity of examining microscopically 

 any of tbe flies for the purpose of determining the proportion 

 infected, but tbe fact that he lost both of his dogs, and that an 

 official from Albertville who travelled with a donkey along the 

 valley of tbe Lukuga lost tbe animal a month after his return to 

 Albertville, is sufficient proof that tbe flies in this valley carry 

 tbe disease. G. fusca was captured near Kanhogo, which is on 

 the river bank, and a little later the author, with tbe assistance of 

 bis men. captured a large number of flies and found that they 

 were a mixture of fusca and morsitans in the ratio of about 1 to -i. 

 As be approached tbe village of Mikato G. fusca gradually 

 became scarcer, disappearing entirely a little before be reached 

 the place. There is nothing in the character of this part of tbe 

 valley to distinguish it from tbe rest, but nowhere else along tbe 

 Lukuga did the author see G. fusca. 



Tbe population of the Lukuga valley appears to be small and 

 collected in very small hamlets. The author says that there is 

 no doubt that in most of the villages sleeping sickness for the 

 moment does not exist, but that in some of them there were 

 isolated cases. He regards the information given him by the 

 natives as to tbe previous existence of the disease as so utterly 

 untrustworthy that nothing can be based upon it, but he was able 

 to obtain a certain amount of evidence that about five years ago 

 tbe disease was present in the upper part of the valley and that 

 it died out. Any attempt to clear away tbe vegetation on the 

 banks of the river is out of tbe question. The number of in- 

 habitants is so exceedingly small that tbe best prophylactic 

 measure will be to remove tbem to some safer place. Tbe rail- 

 way which is to cross the Lukuga valley in the near future 

 presents a difficulty, in that tbe persons employed on its con- 

 struction or in its working may bring about a recrudescence of the 

 disease. 



XiCHOT (' — ). A propos de la fievre a Pappataci. [On Pappataci 

 Fever.]— 5;///. Soc. de Path. Ea-ot.. v. no. 10, Dec. 1912, 

 pp. 780 & 781. 



Leger and Seguinaud have confirmed the relation between 

 Phlehotomus and pappataci fever in Corsica. Tbe author has 

 recorded the frequent occurrence of the insect around Oran, in 

 Algeria. Sergent has discovered tbem at Biskra and makes a 

 somewhat comprehensive assertion that they are to be found all 

 over Northern Africa. The author has collected specimens from 

 Djenan-ed-Dar and the district of Djenan Ounif. which is 

 seriously infested. There can be no doubt that there are within 

 the area a large number of centres. 



