~I 
( 1001 ) 
of the phagocytes is made easter. A LOVE rapid taking up of 
carbon particles must be the consequence of this. 
If this interpretation is the correct one, then other substances, 
soluble in fat, must also be able to effect an accelerated phago- 
cytosis. This result was indeed arrived at for all substances of 
various composition experimented upon, viz. Chloroform, Chloral 
Benzene, Camphor and Turpentine. 
Chloroform was seen to promote phagocytosis eren im a concen- 
tration of 1 to 5.000000. In a concentration | vol. to 500.000 
the increase of phagocytosis amounted to 43°/,. In stronger 
solutions this value was smaller and the stronger the solution 
the more the accelerating effect diminished. This must be attri- 
buted to a second factor coming into play, viz. paralysis of the 
protoplasm-motion, which factor manifests itself but little in a 
very weak solution. 
Benzene e. g. was found to have the most favourable effect on 
phagocytosis in a dilution of 1 to 100.000. 
A saturated solution of Camphor in NaCl-solution of 0,9 °/, caused 
a fairly considerable increase of phagocytosis. But if this saturated 
solution was diluted with 100 times its volume of NaCl-solution 
then the acceleration was again more considerable viz. 32 °/,. 
Turpentine in a dilution of 1 : 100.000 effected an increase 
of phagocytosis of 24.7 °/,. but in a solution of 1 to 25.000 
instead of an increase it caused a decrease and that of more 
than 80°/,! With Chloral the results were exactly the same. 
The facts mentioned in 1—8 deserve our attention from two 
points of view: 
a. They correspond entirely with those observed by J. LorB in 
the artificial fertilization of the eggs of the sea urchin (echinus) 
and the star fish. By allowing namely substances dissolving fat 
to act upon these eggs he could effect the development of these 
into larvae. | 
In our opinion the explanation of this fact must be sought in 
the circumstance that by the weakening of the lipoid egg-mem- 
brane the protoplasm-motion on which the division-process is 
based, is facilitated or rendered possible. This agrees with the 
observation of R.S. Linnie that the mere warming of the eggs 
