( 984 ) 
it has become about equal. Therefore it is only a question of acceleration 
As we did formerly, we also investigated in this case to what 
extent phagocytes which had been left to themselves, exposed for 
about 18 hours to a somewhat low room-temperature, and which 
for the greater part seemed to have lost their phagocytarian power 
as a consequence, could be stimulated again into taking up carbon- 
particles under the influence of Iodofurm. 
An answer is supplied by the following experiment. 
TABLE II. 
Effect of lodoform on paralyzed phagocytes. 
Time during Percentage of leucocytes, having 
which the taken up carbon 
leucocytes EET 7 
The leucocytes have 
were allowed, pe jeucocytes are | been placed in a 
to take up solution of lodoform 
carbon par- placed in NaCl 0.9%, in NaCl 0,9/, 
ticles | (1: 100.000) 
412 202 
il, hour —S¢ 100 = 3,8”/ == 10034590} 
2 | 313°° YY 10 440 °° 45, 10 
It is seen that in a NaCl sol. 0.9°/, the phagocytarian capacity 
fell to 3.8°/,, but rose again to 45.9°/, when the pure NaCl solution 
was replaced by one containing lodoform. 
In what concentration does lodoform exercise a still 
perceptible influence ? 
To answer this question Iodoform solutions of different concen- 
trations were prepared. For this purpose we started from a saturated 
lodoform solution’) diluting it with 5-, 19-, 20- and 50-times the 
amount of NaCl-solution. 
In these solutions the extent of phagocytosis was determined in 
the usual manner. It need only be observed that the white blood 
corpuscles were allowed 35 minutes to take up carbon. 
The following table Til will be clear without further explanation. 
This table shows that whilst in NaCl of 0,9°/, the phagocytosis 
amounted to 44°/,, it had risen to 59°/, in the saturated Todoform 
solution (0.001 °/, lodoform or 1 upon to 100.000). This is already 
a confirmation of the results mentioned in the preceding tables. 
1) A saturated solution of lodoform in NaCl-sol. 0.9 °/) contains about 0.001 °/, 
CHI,. We shall revert to this on p. 986. 
