THE GLANDS OF BYBLIS GIGANTEA. 13 
becoming dry, and by the aggregation of their protoplasmic 
contents with carbonate of ammonia. The sessile glands do not 
contain any red colouring matter. 
Experiment VIII. 
Experiments upon the secretion of stalked glands are 
much more difficult to carry out successfully on Bydblis 
gigantea than on Drosophyllum lusttanicum, owing to the 
drop of secretion from the stalked glands of Byblis gigantea 
being much smaller; and further, as the glands are not 
very close to each other, it is not easy to place a small 
cube of albumen so as to rest on several of them at the 
same time. : 
A small cube of albumen was placed on one of the 
stalked glands, which was examined twenty-four hours 
later. The cube was then found lying on the gland, and 
not surrounded by secretion. This was due to the fact 
that the albumen had absorbed the moisture of the drop, 
which thus. became quite dry, and as it did not resecrete 
- so long as the cube was lying on it, the gland was prob- 
ably slightly injured. 
Experiment IX. 
A small cube of albumen, about half the size of that 
used in Experiment VIII., was. placed on one of the 
stalked glands, and, after twenty-four hours, the secretion 
was not absorbed. At the end of two days the cube had 
become transparent, but there were no signs of any 
rounding off of the edges or angles. After four days it 
was still surrounded by secretion, and, as it was. not 
digested by the end of the fifth day, I removed it and 
placed it on the sessile glands below. which quickly 
poured forth their acid secretion and completely digested 
it. 
This experiment shows that the secretion from the 
stalked glands has not the power of digestion. 
