ORGANIC DEVELOPEMENT. 91 
instances, the budding leaf-bud or flower proceeds from some one or 
more of these cellules, which develope new powers of secretion 
within themselves. These gemmating cellules go on developing 
new cellules in lines, which frequently subdivide, until, in connexion 
with the other attending conditions of growth, the bud forms and 
developes, and the branch commences. 
88. The principal steps in the process, are exemplified in the 
annexed figures. Figure 43, is a branch of 
the natural size, of one of the coralline Alge, 
taken from a clump, an inch and a half 
high, and three or four inches through.* 
The lower part is covered with minute dots 
about 73s of an inch in diameter, which are 
magnified in figure 44. Figure 45 represents 
one of the longitudinal vessels of the inte- 
rior, magnified one hundred and fifty diame- 
ters, consisting of oblong cellules, a 0, 6 c. 
These cellules are ;3s-730 of an inch long. 
From the summit of one (at 0), a cellule pro- 
ceeds laterally, which gives out two smaller 
cellules, and these two others, and so on, and 
the last connect with the sporules (not here 
figured), which constitute the surface dots 
alluded to: about five hundred sporules 
being clustered in a single one of these dots. 
These sporules are each about zt00 of an inch long. Thus we trace 
out the beginning of the germinant process in the first cell which 
takes its outward course, and follow the progress of developement, till 
prepared to form sporules at the extremity. 
With reference to the germinant process, in this case, it should be 
remarked first, that it is not apparent within a third to half an inch 
from the extremity of a branch, for sporules are formed only below 
this distance: above this, the necessary nutriment is drawn off by 
the growing summits, the younger parts of the coralline; as in 
the zoophyte, germination does not take place, except where the parts 
are beyond the influence of the reproductive force at the budding 
apex. As the alga lengthens above, the sporidia form below succes- 
sively, at nearly equal distances, in analogy with the branching of 
zoophytes. 
Fig. 45. 
*] have illustrated this point from dissections of a species of Liagora (L. rubriceps, D.), 
obtained in the Feejees. 
