96 



Van Saceghem (R.)- Dermatose et Gale d6modectique des Bovid6s. 



[Dermatosis and Demodectic Mange of Cattle.] — Bull. Soc. Path. 

 ExoL, Paris, x, no. 2, 14th February 1917, pp. 117-120. 



The two diseases described in this paper are frequently confused 

 although they differ both in their causation and clinically. Demodectic 

 mange of cattle is caused by Detnodex folliculorum and is characterised 

 by the presence of comedones. The disease occurs with equal in- 

 tensity in the dry or rainy season, and can be controlled by the regular 

 use of arsenical dips. 



Dermatosis is caused by a bacterium, Dennatophilus congolensis, 

 and is easily recognisable by the scabs which it causes on the skin. 

 Contagious dermatosis is a seasonal malady which rages in the rainy 

 season in tropical countries ; in the dry season it dies out or becomes 

 chronic. The control for this disease is the apphcation of 5 to 10 

 per cent, carbolated vaseUne to the skin. The two diseases naay 

 co-exist on the same animal, which is probably the cause of the confusion 

 that has arisen. 



Clapier ( — ). Les Porteurs de Kystes fllariens {Onchocerca volvulus) 

 et de Nodosit*s juxta-articulaires en Pays Toma (Region militaire 

 de la Guin6e). [Cases of Filarian Cysts {Onchocerca volvulus) and 

 of juxta-articulary Nodules in the Toma country (MiUtary region 

 of Guinea^). ]~Bull. Soc. Path. ExoL, Paris, x, no. 2, 14th February 

 1917, pp. 150-157. 



The characteristics of these two diseases are compared and con- 

 trasted. The author has no new hypothesis to offer on the etiology 

 of Jeanselme's juxta-articulary nodules, but he is convinced that 

 they are quite distinct from the cysts produced by 0. volvulus, which 

 is apparently limited to the lymphatic system in its pathogenic action 

 and plays a part, not yet determined, in the genesis of elephantiasis. 



Van Saceghem (R.). Cas suspects d'East Coast Fever au Congo. 



[Suspected cases of East Coast Fever from the Qongo.]- -Bull. 

 Soc. Path. Exot., Paris, x, no. 3, 14th March 1917, pp. 172-173. 



The generally accepted view with regard to African coast fever is 

 that it is due to Theileria parva, but recently certain writers have 

 advanced the theory that the specific agent may be a filterable virus. 

 The fact that Theileria parva has been found with certainty only in 

 well-estabhshed cases of this disease does not support this view. 

 Among cattle at Zambi, on the lower Congo, a disease has been noticed 

 which has all the symptoms of African coast fever, but in which it 

 has been impossible to demonstrate this parasite in any of the affected 

 internal organs. A microscopic examination of the blood, however, 

 showed the presence in the red corpuscles of small numbers of parasites 

 apparently identical with T. parva. Lack of material prevented 

 transmission experiments. The disease ravaged only an isolated herd, 

 and all the animals attacked died, the mortahty reaching 40 per 

 cent, in a few months. 



