Cap. XIV. ALDROVANDA VESIOULOSA. 329 . 
boiled in caustic potash; so that it must have been 
enclosed for a considerable time. The glands were 
browner and more opaque than those on other leaves 
which had caught nothing; and the quadrifid pro- 
cesses, from being partly filled with brown granular 
woatter, could be plainly distinguished, which was not 
the case, as already stated, on the other leaves. Some 
of the points on the infolded margins likewise con- 
tained brownish granular matter. We thus gain 
additional evidence that the glands, the quadrifid pro- 
cesses, and the marginal points, all have the power of 
absorbing- matter, though probably of a different 
nature. 
Within another leaf disintegrated remnants of a 
rather small animal, not a crustacean, which had 
simple, strong, opaque mandibles, and a large unarti- 
culated chitinous coat, were present. Lumps of black 
organic matter, possibly of a vegetable nature, were 
enclosed in two other leaves; but in one of these 
there was also a small worm much decayed. But the 
nature of partially digested and decayed bodies, which 
have been pressed flat, long dried, and then soaked in 
water, cannot be recognised easily. All the leaves 
contained unicellular and other Alge, still of a green- 
ish colour, which had evidently lived as intruders, in 
the same manner as occurs, according to Cohn, within 
the leaves of this plant in Germany. 
Aldrovanda vesiculosa, var. verticillata—Dr. King, 
Superintendent of the Botanic Gardens, kindly sent 
me dried specimens collected near Calcutta. This 
form was, I believe, considered by Wallich as a distinct 
species, under the name of verticillata. It resembles 
the Australian form much more nearly than the Euro- 
pean; namely in the projections at the upper end of 
the petiole being much attenuated and covered with 
