258 MR. A. H. REID 



The plumage of the adult bird is black, with the lower 

 part of the back and rump pure white; this white patch 

 is very plainly disceruable when the bird is flying, unless 

 of course it is directly overhead. length about 23 feet; 

 and the average length from tip to tip of the wings when 

 spread is six feet six inches. A female shot by me in the 

 Bushman's River Valley measured over seven feet from 

 tip to tip of the wings, and was 29'' in length. This 

 bird has been set up and is now in the Xatal Museum, 

 Maritzburg; it was in immature plumage. 



In conclusion I may mention an interesting but prol)- 

 abiy little known fact in connection with the Black Eagle, 

 i.e. its habit of playing in the air. Flying to a great 

 height, the eagle will suddenly close its wings and drop 

 like a stone for a few feet; then turning over and over 

 like a tumbler pigeon, will eventually when fairly close 

 to the ground, open out its wings and swoop gracefully 

 away to repeat the performance in some other part of 

 the mountains. 



The Trout in SoutJi African Waters. 

 By Arthur H. Keid. 



Very little attention appears to have been given to 

 the biologies of our South African Rivers and Lakes. It 

 therefore atfoi-ds me much pleasure to accept Dr. Phillips' 

 offer of space in our Journal, in the lio])e that a short 

 i-esume of many years study of non-indigenous flsh life, 

 may create an interest in the subject and be of service, 

 if merely as a guide, to those sportsmen naturalists wlio 

 are members of our Society. 



Perhaps I cannot better preface my remarks than by 

 stating that the couclusi(ms submitted are not mere sur- 



