56 



The Bot-F\y. —Qi(eensla7id Agric. JL, Brisbane, v, no. 1, January 

 1916, p. 36. 



To protect horses from the attacks of the bot-fly {Gastrophilus eqiii) 

 the chin and knees should be smeared daily with the following dressing : 

 Oil of tar, 1 oz. ; olive oil, 6 oz. If the parasites are observed to be 

 present, the animal should receive 2 oz. of oil of turpentine and 1 pint 

 of raw linseed oil. followed in a few davs bv a dose of Barbados aloes. 



RoDHAiN (J.). La maladie du sommeil dans I'Ouelle (Congo beige) ^ la 

 fin de 1914. [Sleeping sickness in Welle (Belgian Congo) at the 

 end of 19U.]—Bull. Soc. Path. Exot., Paris, ix, no. 1, 12th 

 January 1916, pp. 38-72, 1 map, 6 tables. 



The district of Welle, which is abundantly watered by important 

 rivers, shows few undulations except in the south-eastern and eastern 

 parts. Two types of vegetation can be distinguished, viz. , the savannah 

 and the equatorial forest. Three species of Glossina occur — G. palpalis, 

 G. morsitans, and G. fusca. G. paljmlis is found along the important 

 rivers of the forest region and near the mouths of their tributaries. 

 Certain rivers, notably the Tele and the Likati, show a much greater 

 infestation than others. The banks of the water-courses are little 

 frequented by man and the flies feed on the game present in these 

 situations. In the region of the savannah, where the trees bordering 

 the rivers are reduced to certain areas, the distribution of G. palpalis 

 is correspondingly limited. In the valleys where the rivers are 

 bordered by pap5rrus, as well as on the high plateau of Aru, this fly 

 does not occur. It is rarely met with outside the wooded area, only 

 leaving it when food is scarce or at times of flood. 



G. morsitajis occurs only in the extreme north-east, its area of 

 distribution representing the south-eastern limit of the Soudanese 

 extension of this species, which ranges across the Bahr-el-Ghazal 

 and the tributaries of the Shari to the Niger and Dahomey. 



G. fusca is found in small numbers throughout the forest region and 

 in the savannah is met with at irregular intervals near the forests 

 which border the rivers. 



A systematic examination of the population of this region, carried 

 out between 1912 and 1914, has led to the following conclusions : — 



(1) The entire western frontier of Welle is infected ; passing eastwards, 

 sleeping sickness is invading the territories of Ibembo and Monga. 



(2) The northern frontier and the regions of the French Congo bordering 

 on the Mbumu as far as its source should be considered as infected. 



(3) A zone in which the malady is endemic exists at the extreme north- 

 east, around Aba. (4) In the forest region, three small and very 

 locahsed centres have been discovered. (5) The disease has become 

 estabhshed along the banks of the Welle from Dungu to Suronga. 

 There has thus been a considerable extension of the disease since 1907, 

 when part of the territory was examined by Ollivier. 



Prophylactic measures have been actively carried out in the 

 known centres. Persons suffering from the disease have been treated 

 either in hospital or in their own homes, according to the gravity of 

 the case ; the removal of patients from infected districts has been 

 effected, and forests cleared at points frequented by the flies. Measures 



