276 COMPOUND OVARY.— DISSEPIMENTS.—LOCULI. 
sides of the two adjoining ovaries, and is consequently double, 
one half being formed by one of the sides of its own ovary, the 
other ky that of the adjoining ovary. 
In the normal,arrangement of the parts of the ovary, it 
must necessarily happen that the styles, (when they are dis- 
tinct), must alternate with the 
Fic. 612. Fie. 618. dissepiments, for as the former 
are prolongations of the apices of 
the blades of the carpellary 
leaves, while the latter are formed 
by the union of their margins, 
the dissepiments must have the 
same relation to the styles as the 
sides of the blade of a leaf have 
to its apex; that is, they must 
be placed right and left of them,,. 
or alternate. 
The cavities of the compound. 
ovary are called cells or loculi, 
and such an ovary as that just 
described would be therefore 
termed three-celled or trilocular, 
Fig. 612. a. Diagram of three carpels ae ut = formed of three united, 
placed side by side, but not united, OVATles ; Or if formed of the 
b, A transverse section Pg ag united ovaries of two, four, five, 
Door Me sree eed united or many carpels, it would be de- 
by their ovaries, the styles and gcribed respectively as two-celled 
ane aN Pana eee MBs Pees or bilocular, fowr-celled or quadri- 
same, locular, five-celled or quinguelocu- 
lar, and many-celled or multilocu- 
lar. As all dissepiments are spurious or false which are not 
formed by the united walls of adjoining ovaries, it must neces- 
sarily follow that a simple carpel can have no true dissepiment, 
and is hence, under ordinary and normal circumstances, wnilo- 
cular or one-celled. 
From the preceding observations it must also follow that 
when ovaries which are placed side by side cohere, and form 
a compound ovary, the dissepiments must be vertical, and equal 
in number to the ovaries out of which that compound ovary is 
formed. When a compound ovary is composed, however, of 
several whorls of ovaries placed in succession one over the 
other, as in the Pomegranate, horizontal true dissepiments may 
be formed by the ovaries of one whorl uniting by their base to 
the apices of those placed below them (jig. 723). 
We have just observed that all dissepiments are said to be 
spurious except those which are formed by the union of the 
walls of contiguous ovaries, and it occasionally happens that 
such spurious dissepiments are formed in the course of growth, 
by which the ovary acquires an irregular character. These 
