( 1000 ) 
These remarks have been already confirmed by what we observed. 
In eggs of sea-urchins and star fishes an artificial membrane-forma- 
tion could be effected according to investigations of J. Lors by the 
addition of slight quantities of digitaline. Yet it was impossible to 
discover an acceleration of phagocytosis with this substance, nor 
with Strophantine. 
Nevertheless it will be useful to investigate to what extent the 
facts observed by us hold good for other cells than those mentioned, 
and also for other substances which dissolve fat. | 
Hence we are continuing our investigation in this direction, and 
have already arrived at the preliminary conclusion that the move- 
ment of spermatozoa is promoted by diluted solutions of turpentine. 
We could not effect this by means of lodoform, perhaps because 
this substance, in the concentration necessary to increase the mobility, 
had a deleterious effect upon the living protoplasm. 
SUMMARY. 
The above investigations have mainly led to the following results: 
lL. A saturated solution (0.001 °/,) of Lodoform in a NaCl-solution 
of 0,9°/, ús able to accelerate phagocytosis to a very considerable 
ertent. This favourable effect of lodoform not only manifests 
itself. in the case of phagoeytes which have been obtained from 
blood a short time before, but also in the case of those which 
have for the greater part seemingly lost their phagocytarian power, 
having been placed for a considerable time, e.g. 18 hours, in a 
NaCl-solution of 0,9 °/,. 
Ww 
The effect of lodoform is still plainly visible in a fluid containing 
1 gramme CHI, to 5.000000 cM*. NaCl-solution 0,9 °/, or 1 gramme 
molecule CHI, to 1.900000 L of the NaCl-solution. 
Undoubtedly the effect will be visible in a still stronger dilution. 
(Compare Table IV). 
3. This effect of an lodoform-solution cannot be ascribed to ions of 
I, for these are found to impede phagocytosis. We must think 
here of the property of lodoform to dissolve in the fatty outer 
layer of phagocytes (the so-called lipoid membrane); hence the 
membrane is softened, the surface-tension diminishes and the motion 
1) Artoinc. Article: Chloroforme, in Richet’s Dictionaire de Physiologie. 
