512 
Bulletin de la Société de Pathologie exotique 
Pour terminer, je dois mentionner que j’ai, sans succès, ino¬ 
culé le trypanosome de Mazagari à deux coqs et à deux oies. Ces 
animaux ont résisté à des réinoculations répétées de virus faites 
à doses massives. 
Travail du laboratoire du Groupe Sanitaire Mobile 
des Doukkala A b du. 
A Sudanese Dermatitis Venenata 
by 
Albert J. CHALMERS, M.D., F.R.C.S., D.P.H, 
Direclor, Wellcome Tropical Research Laboratories, 
and W aino PEKKOLA 
Wellcome Tropical Research Laboratories, 
K li a r tou m 
Contents : Introductory. Sudan Case. Diagnosis. Ætiology. Haplophyllum 
tuberculatum. Treatinent. Summary. Aclmowledgments. lleferences. 
Illustrations. 
Introductory. — Until recently works upon TropicalMedicine 
could be searched in vain for records of Tropical Dermatitis 
Venenata and lhe reasonsare firslly because tlie éruption isoften 
dépendent upon tbe personal idiosyncrasy of the patient to 
some plant, which may not affect otlier people, secondly because 
particular regard bas not been paid to the fact that tbe patient 
has been in contact with any spécial plant, and lastly because it 
is so d i f fi cuit to prove beyond doubt tbat a given plant is the 
cause of tbe éruption as tbe patient may hâve travelled many 
miles before lie seesa doctor and, unless he iscarrying tbe plant 
with him, he is generally very considerably relieved from bis 
acute symptoms before any medical aid is available. Luckily we 
bave been able to prove beyond doubt that tbe Rue presently 
to be described was the actual causal agent of the victim’s érup¬ 
tion and therefore bring forward the following notes. 
With regard to tbe general bistory of Dermatitis Venenata, 
Write of Boston, in 1887 , gathered togetber many facts while 
