468 
COLOR A QUESTION OF CLIMATE. 
for the women to clap their hands and make an ululating 
sound ; the men stoop and clap their hands on their hips. 
When they wish to be especially respectful, they throw 
themselves on their backs, and roll from side to side, slap- 
ping the outside of their thighs vigorously, and calling out 
“ Kina-bomba ! kina-bomba ! ” with great energy. 
The natives of Africa who live in elevated, dry situa- 
tions, and are not obliged to work much in the sun, are 
frequently of a light warm brown. In fact brown, not 
black, is their color, and its darkness is probably caused 
by the sun, and partly by something in the soil and climate 
which is not yet understood. The color it appears is not a 
question of race, since a wound, or scar, after a long resi- 
dence in a hot climate, heals darker than the rest of the 
body. It is not unusual to meet Europeans with hair 
darker than that of the African, or with Africans whose 
hair has a distinct reddish tint, and who have the same 
nervo-sanguineous temperament as the Xanthous varieties 
of other races. 
Among the Batoka, as among other tribes, a strong clan- 
nish feeling prevails. Like the bushmen, the Batoka have 
great skill in following the track of a wounded animal; 
they are educated to do so. They are also excellent 
climbers, being used to collect the wild fruits. On the 1st 
of October the party encamped on the Kalomo, and found 
the weather warmer than in A ugust. At 3 p. m. the ther- 
mometer, at four feet from the ground, stood 101° in the 
shade. Though the weather had been dry, no rain having 
fallen for months, the trees were commencing to put forth 
leaves. A day or two after the thermometer stood 102’ in 
the shade, and under the tongue, or armpit, 99.5°, showing 
this to be the temperature of the blood ; with the natives 
it stood at 98°. 
The Longkwe, or as the Makololo call it, the River of 
Quai, or tobacco, comes in from the country of Moselekatse, 
or from the southwest, and joins the Zambesi above Oo- 
longwe. On the 5th, after crossing some hills, the party 
