( 994 ) 
TAB 1E A 
| Concentration of the Benzene-solution in which the effect on 
phagocytosis is still perceptible. 
| Percentage of the leucocytes 
Fluids. : 
| having taken up carbon 
266 
| 549 Xx 100 = 41107, 
642 5 
NaCl 0,9, 
164 Aen: 
| 205 2 100 =" 405» 
1 + 349 
+ 400" = "50 A 
694 TT 
Benzene 1 : 5000 
282 
== + 100 == 480, 
D160 
305 Wk 
| 602 100 == 50:6, 
Benzene 1: 100,000 | 
| oie 
758 x Ae 49,2 ” 
( 276 Ate 
\ 178 B 100 —= DI 
Benzene 1 : 500,000 
982 
= 100 = 60,5 
| 166 ja? 
356 L00 ee 
en == 44 
| RO7 ie 
Benzene 1 : 5000000 
168 ; 
112 < 100 = 40,7, 
This table leaves no doubt -but Benzene too revives phagocytosis. 
This is visible at a dilution of 1 to 5000, but the effect is found to 
be much greater at a dilution of 1 to 500,000. 
Very likely the cause of this difference will have to be traced to 
the narcotic influence of benzene. At a dilution of 1 to 5000 Overton 
saw tadpoles pass into narcosis. 
These experiments were repeated with leucocytes which had been 
placed during one night in a NaCl-solution 0,9 °/,. 
Still more clearly than in the preceding table we can observe 
here the stimulating effect of Benzene. The most favourable proportion 
is again 1 to 500.000, but a still greater effect is obtained by CaCl,, 
at least in the concentration given. 
