. The Journal of tropical medicine and hygiene . OMATOLOGY AND TBEATMENTOF HUMAN TRYPANOSOMIASIS IN THELUSANGA AREA, DISTRICT DUKWANGO,BELGIAN Report based upon 370 Recorded Cases and6,200 Intravenous and Intramuscular W. E. Masters, , writer confines himself largely to humantrypanosomiasis as he has found it in the above as its centre a settlement known as Leverville(lut. 4° 49 3i, long. 18° 46 33), situated about1,450 ft. above the sea-level, and about 375 miles(600 kilometres) from Kinshasa along the riverroute. The area
. The Journal of tropical medicine and hygiene . OMATOLOGY AND TBEATMENTOF HUMAN TRYPANOSOMIASIS IN THELUSANGA AREA, DISTRICT DUKWANGO,BELGIAN Report based upon 370 Recorded Cases and6,200 Intravenous and Intramuscular W. E. Masters, , writer confines himself largely to humantrypanosomiasis as he has found it in the above as its centre a settlement known as Leverville(lut. 4° 49 3i, long. 18° 46 33), situated about1,450 ft. above the sea-level, and about 375 miles(600 kilometres) from Kinshasa along the riverroute. The area is drained by the two rivers, R. Kwengeand the R. Kwilu, the former forming a junctionwith the latter, at which junction the settlementof Leverville is situated. The area radiates about60 miles in all directions from this centre. Thesetwo rivers form a large Y, and receive in their tiunthe usual small tropical streams. The R. -Kwiluflows into the R. Congo through the shortR. Kwatigo, and thus gains the sea. At the ex- CoNOo Beloe. Europeans are scattered over this area, usually close to the river. area during the years 1915, 1916 and 1917. The tremities of the Y are other European settlements,district in which the experiments were carried along the river banks are the outlets for agriculturalout comprised about 4,800 square miles, having posts, while the natives live more in the interior. THE JOUENAL OF TEOPICAL MEDICINE AND HYGIENE. [Jan. 15, 1918. The rainfall averages about 6077 in. per annum(average over three years), and has marked localvariations. The average temperature in the shade is25-200 c. (77-30° F.). There are no mountains,but the undulations of the land are many andmarked. The district is not well wooded, butpalms (Elceis guineensis) abound. The soil issandy and permits of ready percolation of rainwater, which drains itself through the subsoil tothe rivers or lies in pockets, forming marshesin the interior or at intervals along the river banks. Th
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