FISH CULTURE IN BKITISH EAST AFRICA 85 
public subscription, and on my writing to Mr. McLean, the 
manager, at Cape Town, of the Union Castle Company, 
he promised to send up the fish to Mombasa free. On my 
return from leave, at the end of 1909, 1 took the matter up ; 
and after some delay, owing to various causes, a carboy con- 
taining forty-five little carp, about half an inch long, arrived 
safely at Mombasa. Then ensued a most untoward accident. 
While the fish were being brought up from Kilindini to Mom- 
basa, the carboy rolled off the waggon and was smashed to 
pieces. But carp are handy fish, and thanks to the trouble 
taken by the Transport Department to meet this disaster, the 
fish were picked out of the broken carboy, and put into fresh 
water and arrived at Nairobi with the loss of only three fish. 
I was away in German East Africa when they arrived, and it 
was not known that there were carnivorous native fish in the 
dam at the same time. However I got the dam pumped out on 
my return, and the little carp fry separated from the native 
fish. When this was done, we found that the number of carp 
had been reduced to thirty-three. These were viewed by 
Mr. Jackson, the Lieutenant-Governor, and about the middle 
of last December were returned to the dam, where they are now 
thriving and increasing rapidly in size. Two fish, which 
recently came to the surface, killed by some unknown cause, 
were found to have grown five inches in length in four months. 
They were in the pink of condition and looked perfectly healthy. 
Dr. Ross has examined these fish and determined the cause of 
death as inflammation of the intestines. It has been probably 
caused by the dirty state of the water in the dam, owing to 
the cutting of the supply furrow from the Nairobi River. Steps 
were at once taken to remedy this. 
As mentioned above, it has been decided not to introduce 
carp into Lake Naivasha until it has been proved that trout 
will not thrive there. Carp is to be restricted to the lower 
and more sluggish waters of the rivers and to such dams and 
ponds of still water as may be fit for them ; together with cer- 
tain of the lakes which seem unsuited to trout. I may mention 
the dam of the Electric Light Works near Nairobi, the shallow 
Lake Naivasha on the road between Londiani and Ravine, also 
the water impounded above the dams of the Nairobi river at 
