35 2 Physiology at the British Association. 
A joint discussion with the Section of Agriculture followed 
on ‘ The Vitamines/ but did not produce any novel facts. 
The afternoon papers were read by Professor W. Storm 
van Leeuwen, of Leyden, on * Experimental Studies in 
Hypersensitiveness/ and on ‘The Cause and Treatment of 
Asthma, Hay -fever, etc./ the chief point demonstrated being 
that hypersensitiveness is not specific, but if it exists for one 
substance, may also exist for another, not necessarily similar. 
At five o’clock, Mr. Bancroft, F.R.S., the leader of an 
expedition to the Andean Plateau to study the effects of high 
altitudes, gave an account of the expedition, and of the 
physical conditions of the miners who work in this region in 
mines, the highest in the world, 14,000 feet above the sea. 
The most remarkable fact noted was the development of the 
chest to compensate for the respiratory difficulty caused by 
the lack of oxygen. A radiogram showed that the ribs were 
almost horizontal instead of sloping downwards, as in normal 
individuals. 
On Monday morning there was a joint meeting with the 
Section of Physics to demonstrate and study the use of Physical 
Instruments for Biological purposes. The instruments shown 
were chiefly for testing and analysing hearing, and varied 
from the simple tuning fork to electrically worked instruments 
of great complexity only suitable for use in the Laboratory. 
In the afternoon, Dr. F. W. Edridge Green lectured on 
‘Colour Vision Theories and Colour Blindness/ and on the 
‘ Necessity for a Standard of White/ He showed how colour 
blindness may be detected by colour mixing to make white, 
and stated that the best standard white was magnesium oxide 
illuminated by the light of the tungsten arc lamp. 
On Tuesday morning, the first paper was by Dr. P. M. 
Tolmie on ‘ The Blood Corpuscles, their Developement and 
Functions/ Treating of the white corpuscles, he supported 
the theory that the lymphocytes acted as agents in the con- 
veyance of proteid nourishment from the alimentary canal 
to the blood. In criticising this view, the President considered 
that the function was impossible on account of the insufficient 
number of the lymphocytes ; but the theory was supported 
by Professor Halliburton, with the assumption that each 
lymphocyte might make several journeys. This was followed 
by a very intricate paper on ‘ The Secretion of Sweat/ by Dr. 
J. H. Burn, the Secretary of the Section ; and the author was 
complimented on the excellence of the work. 
The proceedings of the Section were brought to a close by 
a Lecture at 5 p.m. by Prof. Halliburton, F.R.S., on ‘Our 
Bones and Teeth/ which was illustrated by lantern slides, 
among which were some beautiful photo -micrographs of the 
minute structure of the teeth. 
Naturalist 
