‘ 
A 
au 
ning 
4e 
By! 
On Haemoglobin Metabolism in Malarial Fever. 175 
globin ; but the amount of hemoglobinemia is kept below that necessary to 
produce hemoglobinuria by the continuous activity of the liver. 
In a case of blackwater fever examined by Major Ross, Dr. Thomson, and 
myself, the fecal excretion of urobilin reached an astonishing figure, repre- 
senting practically the elimination of an amount of hemoglobin equal to the 
whole of the circulating blood. This was accompanied by slight urobilinuria 
and very slight hemoglobinuria, showing that the hemoglobinuria of black- 
water fever is apparently only an overflow from the normal channel of 
excretion, and that the hemolysis has reached an exceptional figure. Further 
studies are being made on the subject. 
Colour-Blindness and the Trichromatic Theory of Colour Vision. 
Part [1.—Incomplete Red or Green Blindness. 
By Sir W. DE W. ABNEY, K.C.B., F.BS. 
[This paper is published in Series A, vol. 84, No. 572.] 
On the Sensibility of the Eye to Variations of Wave-length in the 
Yellow Region of the Spectrum. 
By Lord Rayetcu, O.M., F.R.S. 
[This paper is published in Series A, vol. 84, No. 572.] 
VOL. LXXXIIL—B. P 
