Ill 



would probably be yet more so, if it were not for the 

 presence of the red needles which partially clinging to 

 the wall of the test tube give the fluid a fictitious depth 

 of colour. 



In the older series the measurements were made by 

 comparison with the upper part of the haemolysed fluid, 

 and therefore the numbers within the parenthesis are 

 nearly constant. 



As the above data show it is characteristic of the 

 strong monovalent alkalies that their htemolysis increases 

 very quickly with the amount of alkali, and this in- 

 crease is at a greater rate than it should be, if it were 

 proportionate to the square of it. This phenomenenon 

 depends without doubt on the comparatively small 

 hydrolysis of their combinations with the blood cor- 

 puscles. 



We have still to give a more detailed report con- 

 cerning the action of various amounts of blood on the 

 same amount of toxin. The results of these experiments 

 are shown in the following table, in which the quan- 

 tity of toxin varies from 1,6 cc. to 0,05 cc. of a 0,1% 

 solution. The arrangement of the table is the same as 

 in the previous one. The experiments are made on 

 blood corpuscles, diluted in salt solution at 37 C for 

 1 hour. 



The maximum value, which in this case is very little 

 pronounced viz. flatter than in the experiments with am- 

 monia - occurs in general with a smaller amount of 

 blood than for the alkalies. In the case of the solutions 

 which contained the most toxin (1,0 and 0,6 cc.), the 

 maximum is found with about 6,5% blood dilution; 

 with smaller amounts of toxin, (0,4 cc. to 0,25 cc.), it is 

 found with about 0,2 % blood dilution and for the 

 weakest solutions of toxin (0,08 cc.) first with 0,1 %. 



- 24 - 



