TRANSACTIONS OF SECTION I. 559 
6. On lhe Freezing-point of the Laked Red Blood Corpuscles of Man 
and some Domesticated Animals. By Dr. H. G. Cuapman. 
If a mixture of blood and 0-9 per cent. NaCl be subjected to immediate 
microscopical examination the red corpuscles are seen to be crenated. When 
less concentrated solutions of salt are used, crenated corpuscles are numerous 
until the concentration of salt falls below 0-55 per cent. Laking of the 
corpuscles commences when the concentration of the salt falls below 0-65 per 
cent. 
Measurements of the freezing-point of laked solutions of the red corpuscles, 
separated in the centrifuge, have been made by Beckmann’s apparatus. These 
freezing-points have been invariably higher than those of the serum of the same 
sample of blood. When the corpuscles have been washed with salt solutions 
of different concentrations, the freezing-points of the solutions of the laked 
corpuscles have risen after each washing. After three washings with an equal 
amount of salt solution, the freezing-points of the solutions of the washed 
corpuscles have risen about 0°2° C. When, however, the red corpuscles are 
washed with salt solution saturated with tri-basic calcium phosphate, the 
freezing-points of the solutions of red corpuscles remain constant after each 
washing. 
The concentration of the contents of the corpuscles is diminished by washing 
with salt solution, but not by washing with salt solution saturated with calcium 
phosphate. 
7. Precipitin Reactions in Pathological Human Urines. 
By Cyrit SHELLSHEAR. 
Demonstration of precipitin reactions to human serum :— 
(a) Albuminous urine . .  . 1. Containing high percentage albumin. 
: pe ” low ” 2”? 
(b) Eclamptic urine .  . Ls F high 2 9 
2. = low » ” 
8. A Contribulion to the Psychology of Written Errors. 
By Dr. H. Tasman Loven. 
9. Analysis of Conation. By Dr. H. Tasman Lovett. 
10. The Relation of the Feeling of Familiarity to Belief. 
By Dr. H. Muscic. 
11. Mind and Matter. By Dr. Law. 
