208 TT. H. Huzley on the Phenomena of Gemmation. 
form. 
n the terminal chambers of this ‘ Pseud-ovarium,” ovum- 
like bodies, thence called “‘ pseud-ova,” are found. These bod- 
: ’ : P : 
iological difference, which cannot be detected by the eye, but 
becomes at once obvious in the behavior of the two germs after 
a certain period of their growth. Dating from this period, the 
peseoren spontaneously passes into the form of an embryo, 
ecoming larger and larger as it does so; but the ovum simply 
enlarges, accumulates nutritive matter, acquires its outer invest- 
ments, and then falls into a state of apparent rest, from which it 
will never emerge, unless the influence of the spermatozoon 
have been brought to bear upon it. 
That the vast physiological difference between the ovum and 
the pseudovum should reveal itself in the young state by no 
external sign, is no more wonderful than that primarily the 
— of the brain should be undistinguishable from that of the 
The phenomena which have been described, were long sup- 
isolated, but numerous cases of a like kind, some 
even more remarkable, are now known. 
ong the latter, the speaker cited the wonderful circum- 
stances attending the production of the drones among bees, 23 
described by Von Siebold ; and he drew attention to the plant 
upon the table, Celobogyne tlicifolia, a female euphorbiaceous 
shrub, the male flowers of which have never yet been seen, and 
which nevertheless, for the last twenty years, has produced its 
annual crop of fertile seeds in Kew Gardens. : 
Not only can we find numerous cases of agamogenesis similar 
to that exhibited by Aphis in the animal and vegetable worlds, 
