- 
282 ' THE VEGETABLE WORLD. 
cellule, which had served as a covercle or lid to the central 
cavity, is broken, or is occasionally expelled through the fracture 
at the cuticle (Fig. 346), the antherozoids being expelled at the 
same time. 
At the moment of their expulsion the antherozoids present 
themselves in the form of little greyish spherical vesicles, whose 
(3 a 
pa (3 ©/ 
, Oe 
Fig. 347. 
contents are very indistinct (Fig. 347). At first they are a 
movable ; but after some minutes they begin to unroll themselves 
suddenly, and dart into the ambient liquid with inconcelv@ 
rapidity. They now turn themselves with gyratory movemen 
which are sometimes continued without interruption during gcse 
and even two hours. If a drop of iodine is added under the 
microscope, these movements are suddenly arrested. Their body 
twisted and contorted, forms a sort of spiral ribbon; it is ée 
imperfectly defined about the extremities. The locomotive ee 
of these strange bodies consist of bundles of short cils, 2 8* 
