too 
bear out the interpretation of this seasonal prevalence given by 
owners, most of whom think that the deaths will (jccot soon after the 
commencement of the rains irrespective of the date of infection. Tht 
more reasonable explanation would be that as waggon iranspon > 
impossible except in tlie dry season, the infection takes place betweer 
May and October ; and since the disease is of a rapidly faa 
character (one to five months), deaths will normally occur aboffl 
November at the time rains are expected to break. Further, its 
obvious that any debilitating influence, and particularly this suddcc 
climatic change, will act a.s an exciting agent and hasten a fatal 
termination. 
The ordinary method of prevention consists in avoiding tsetst 
country ; where this is impossible, animals are driven through at 
night, and are kept on an open grass jilain during the day, for o^Tiers 
have noticed that the tsetse {Gi. morsitans) frequents by choice the 
bush. A native method of prophylaxis exists, and it appears to 
also been used as a curative. Previous to entering a fly area the 
water of the cattle is restricted so as to compel them to dnnk a bitte 
decoction made from the bark of a tree {Kaugomba) in which the body 
of one tsetse is placed. At night the animals are kept in a hut and i 
fire made of the young twigs and leaves of a bush {in'safwa\ in the 
smoke of which they remain till morning. The effects of this 
treatment are held to last for three to four days, but daily adoption is 
commended. One European expressed some faith in ih having 
ice taken an animal into a tsetse zone after fumigation. Another 
P t e matter to a more thorough test, and after medication sent 
catt e into a fly area ; they all died within six months. As 3 
may be to a degree efficacious, for thf 
attack agent would certainly tend to repel the 
in ° ^ question the correctness of the diagnosis 
ha!e resXd’ admittedly few, in which a cure is said to 
incr.minated''thTt!etrtoTr''' T"" 
the views nn ^ ‘ ^ exclusion of all other biting flie 
Afr.ca .he associah 
extent. The e held, but to a more limited and di; 
whose, father ^ native of North-Eastern Rhc 
’ Sireatest chiefs on the Western side ■ 
