TWO PRINCIPAL MODES OF REPRODUCTION. 553 
‘Mosses, and Hepatic, as well also the “zoospores” of Alge, * 
‘belong to the same class of reproductive bodies. The gemmz 
of Phanerogamia may be developed in connexion with the 
parent. structure, and may continue to form a part of it ; or 
they may be removed from it (as in the processes of budding, 
ing, &c.), and may be developed into new individuals.— 
On the other hand, the bodies of the second class are known - 
s seeds among Flowering Plants; among the Cryptogamia 
‘they present a variety of forms. From the very first, these 
e destined to produce new individuals ; and although they 
are often assisted in the early stage of their development by 
he parent, they are its true offspring, rather than (like 
smmz) extensions of itself. Both these modes of Reproduc- 
ion, namely, gemmation and sexual generation, exist in the 
imal Kingdom ; but the former is confined to its lower 
fribes, among which we often find it exercised in very remark- 
able modes. 
Gemmiparous or Non-Serual Reproduction. 
» 125. Among Infusoria (§ 133) we find the process of gem- 
aation, or of fission, which is a modification of it, to be almost 
the only ostensible means of propagation which the beings 
composing that wonderful group possess. The former may be 
pontinually witnessed by the microscopic observer in the 
pommon Vorticella, a bell-shaped animalcule attached by a stalk 
g. 295. VARIOUS FORMS OF ANIWALCULES, some of them undergoing spon- 
taneous 
fig. 295, a, a), and abundant in almost every pool in which 
quatic vegetables grow, especially clustering around the stems 
f Duckweed ; and its various stages closely resemble those 
