ANDREWS AND ELLIS: REACTIONS OF HAIRS OF SALVINIA +443 
During the second twenty-four hours the drops of white of egg 
in many instances broke, forming irregular patches which sank 
down to the surface of the leaf, completely surrounding the hairs 
which had supported them. At the same time the neighboring 
leaf hairs bent over into the white of egg in much the same manner 
as noted regarding the cubes of cooked white of egg. The control 
drops of water did not change meanwhile, remaining as spheres 
on top of the leaf hairs. Several things might have caused the 
drops of white of egg to act in this manner, but in the light of the 
solvent action of the leaf hairs on the cubes of cooked white of egg 
it seems probable that the leaf hairs themselves were responsible 
for the change which caused these drops of raw white of egg. to 
change. These cultures were continued for eight days. During 
this time several of the drops of white of egg became infected 
with the white fungus already mentioned. The result was the 
same as that with the crushed insects. The white of egg be- 
came steadily more liquid until it was reduced to a fluid almost as 
mobile as water. By close observation it could be determined 
that in those cases where the tiny spheres of white of egg did not 
break and run down on to the surface of the leaf the amount of 
white of egg had decreased. 
Experiment 4. On the leaves of fresh cultures of Salvinia 
drops of uncooked yellow of egg were placed. Controls were 
established by drops of the yellow of the egg being placed on clean 
glass in the dishes with the Salvinia, just above the surface of the 
water. The color of the egg on the leaves became noticeably 
paler than the control during the first twenty-four hours. At the 
end of forty-eight hours it had spread over a small area of the 
leaf surface in the same manner as the uncooked white of egg 
had done in the previous experiment. The color of this egg on 
the leaves was several shades lighter than the control and of a 
quite different consistency, being more like cream than the control. 
The same chemotaxis was displayed by the hairs surrounding the 
area covered by the egg. 
Experiment 5. It was the object of this experiment to ascer- 
tain whether the plant was profiting by the presence of the decay- 
ing or soluble organic matter on the surface of its leaves. Four 
different jars of Salvinia were prepared. 
