376 
Notes. 
For the normal eye every point of the spectrum appears with 
a different colour. For the colour-blind there are certain points 
in which they obtain the sensation of whiteness, because at these 
points the two colour-sensations which in them exclusively pre- 
dominate act with equal intensity, and produce the sensation of 
whiteness. Herr A. Konig (“ Verhand. Berlin Physik Gesells.”) 
has determined this neutral point in a number of cases by means 
of a special apparatus. He considers that the cause of colour- 
blindness lies in a more or less complete coincidence of two of 
the three curves of primary sensibility. 
M. Aug. Charpentier (“ Comptes Rendus”) considers that 
from the point of view of perception we must recognise two very 
distinct groups in the series of colours. The warm colours are 
distinguished from a colourless ground more easily than white, 
whilst the cold colours are less readily distinguished than white. 
Professor Jager, the “soul-smeller” ( seelen-riecher ) as he is 
familiarly called in Germany, delivered lately a lecture on the 
necessity of wearing animal fibres alone next to the skin, rejecting 
cotton and linen even for the linings of garments. Many 
passages of the ledture are said to have occasioned general 
cheerfulness. 
Professor J. W. Spencer (“ Kansas Review of Science”) main- 
tains that in the earlier portion of the Quaternary Age, the 
Mississippi was very much larger than at present, having in the 
lower part of its course an average width of fifty miles, and 
received the drainage of Lakes Superior, Michigan, and 
Winnipeg. 
We observe that “ right-handedness ” extends very far along 
the animal series. Parrots hold their food by preference in the 
right foot, and, though we cannot speak positively, wasps, 
beetles, and spiders seem to use the right anterior foot most 
commonly. 
To our non-professional mind the projected establishment of a 
new hospital for North London seems a step of doubtful wisdom 
in face of the financial difficulties with which the existing medi- 
cal charities have to struggle. 
M. V. Babes (“ Comptes Rendus ”) has made a comparative 
study of the bacilli of leprosy and of tuberculosis, and finds 
that the distinctions indicated by Dr. Koch do not exist, but he 
points out, in their place, other differences. 
