( 997 ) 
We see from these experiments that the saturated Camphor-solution, 
instead of reviving the phagocytarian power, has entirely destroyed it. 
The red blood corpuscles when seen under the microscope have lost 
their colour and from a number of white ones the contents have 
passed out. 
This it is true could not be observed in the case of the weaker 
Camphor-solutions, but yet there can be no difficulty in assuming 
that in these too the phagocytes have suffered, whence no revived 
phagocytosis took place. 
The reason why in the preceding series of experiments the phago- 
eytosis was promoted by Camphor will have to be sought in the 
fact that in the first case fresh cells were experimented upon, in the 
second case phagocytes weakened by their long stay in NaCl-solution 
0,9°/,. Indeed they must have lost ions of Ca and probably also 
other ions by interchanging them with Na. 
That their life has not been destroyed for ever is seen from the 
fact that an addition of CaCl, raises the phagocytarian power again 
to 42,8 °/,. 
There were obvious reasons for repeating the experiment also with 
weaker Camphor-solutions. Therefore we took a saturated Camphor- 
solution in NaCl 0,9°/,, diluted it with 10-, 50-, 100- and 500 times 
its volume of NaCl 0,9°/,. For the rest the method of experimenting 
was entirely the same as that followed in the preceding series of 
experiments. 
AQ BL: B XV. 
Concentration of the Camphor solution in Na Cl 0,9°/, at 
which its effect on phagocytosis is still perceptible. 
Fluids. he having 
Na Cl 0,90/, me »< 400 41,7 Of, 
Camphor 1 : 10 = < KO DE 
Camphor 1 : 50 = ><. 100. =S 402 
Camphor 1 : 100 a xX 100 ala 
Camphor 1 : 500 jn 100 49,1 ,, 
399 
