22 
EARLY MAN IN BRITISH EAST AFRICA 
A similar one, but broken in half, was found on a Fibre 
Estate at Voi.. 
A rude stone bowl (or mortar) was dug up a few miles 
south of Naivasha Station. 
This and the Kwe from Mwatate were figured in the writer’s 
book on the 4 A-Kamba,’ p. 160. 
Recently, beautifully worked arrow-heads were discovered 
in Kyambu district, on Kinangop Plateau and at Njoro, by 
Messrs. Montagu, Chesnaye, and Tunstall. 
Njoro appears to be a very promising place, for Mr. W. 
Tunstall has sent in a small collection of worked obsidian stones, 
all of which he found in the vicinity. Two very perfectly 
rounded quartz spheres have been found, one on the top of a 
kopje in the Tsavo Valley and one in a cutting on the Magadi 
Railway. These were probably originally reduced, roughly, 
to their present shape by water action in pot-holes, but were 
picked up by early man and used as mullers for grinding and 
crushing roots, &c., and thus gradually assumed a more perfectly 
spherical shape. The specimen from Magadi was found some 
distance below the surface in a recent volcanic area, and there 
are no pot-holes within many miles. It is said that similar 
round stones are used to this day by the Masai to polish their 
new spears, and also to sharpen or put a gritty edge on the stones 
on which native meal is ground. 
As far as is known no early pottery has yet come to light, 
no bone tools, and no cave drawings. More unfortunate still, 
no early skulls have yet been found ; but as before explained 
unless there is lime about, human bones very soon disintegrate 
and disappear. No ancient middens or rubbish heaps have 
yet been discovered. 
The materials used for the implements discovered up to 
date are usually obsidian, but the scrapers found by Dr. Oswald 
were made of basalt. As above mentioned, one arrow-head of 
chalcedony or agate has been recorded. The perforated stone 
Kwes and the Naivasha mortar were of basalt and phonolite 
respectively. 
The collections found in British East Africa are not yet 
large enough, and collateral evidence is too scanty, to enable 
any real attempt to be made at systematic classification, as 
