THALLOGENS. 243 
by the yellowish colour of their receptacles,” he says, “ are placed 
for a short time in a humid atmosphere, an effect is produced 
analogous to what has been described in the female. The 
antherids, expelled in immense quantities from the conceptacles, 
form on the surface of the frond at each ostiole, or mouth, small 
viscous mammals of an orange colour. When a portion of the 
viscous matter is detached with a needle’s point, and examined wit 
K h 
oA u} %. 
GS 
uN 
() b 
ae 
ST) 
is 
& 
Fig. 317.—Transverse section of the Conceptacle enclosing Sphores. 
the microscope in a drop of sea-water, it is seen that it is entirely 
fomposed of antherids, which almost immediately discharge the 
antherozoids which they contain. These move about with the 
utmost activity, and their movements are prolonged sometimes till 
the next day, diminishing in their intensity, however, and by the 
. day at latest they have become decomposed. | 
‘Tn order to fecundate the spores and prepare them for germi- 
hation, it is necessary to mix them with the water which contains 
Some antherids, If the experiment is made upon a glass plate, 
and the antherozoids are present in considerable quantities, one of 
oo curious spectacles which the study of these interesting 
ne tan. produce will be presented to the observer. The 
ozoids, attaching themselves in great numbers to the spores, 
Communicate to them, by means of their vibratile cilie, a move- 
Ment of Totation, sometimes very ai Sometimes the entire field 
- : 
