154 
CORRESPONDENCE 
I would be glad to know if this yellow colour has been 
observed before and what causes it. 
It has been suggested to me by a friend that lead in the 
water might account for it. 
J. K. Creighton. 
February 2, 1914. 
Cannibalism in Serval Cats 
Two adult Serval cats — male and female — which had been 
kept in a cage about eight feet long from their kittenhood, were 
on perfectly friendly terms with each other, except at feeding 
time when the male became aggressive. The cats were fed 
about 6 p.m. daily. On one occasion, in order that a visitor 
might see the cats at their meal, they were fed several hours 
earlier than usual. The next morning the female was discovered 
dead, with part of her neck and shoulder eaten away. The 
carcase was allowed to remain in the cage all that day, when 
the male was observed to practise cannibalism. Up to the 
day of her death the female was perfectly healthy, so I think 
it may be presumed that she was killed by her mate, prior to 
being partially devoured by him. It is quite possible that 
the alteration in the meal-time may be responsible for the 
tragedy. 
E. W. Harper. 
Nairobi, March 13, 1914. 
CORRESPONDENCE 
(To the Editor) 
Dear Sir, — Dr. Duke has asked me to direct your attention 
to an inaccuracy in Mr. Woosnam’s article in your No. 7, 
Yol. IV, dated December, entitled ‘ The Question of the Rela- 
tion of Game Animals to Disease in Africa.’ It is stated on 
page 9, para, (ii.) that ‘Up to the present no wild animal has 
been found naturally infected with a trypanosome of sleeping 
sickness.’ If he had read further the reports by Dr. Duke to 
the Royal Society he would have seen that Duke found T. 
