THE FRUIT. 165 
testa, sufficiently developed. The seeds of the Pomegranate also 
present a testa full of pulp. 
There are other berries, the structure of which is so peculiar, 
that they have received special names. We will 
content ourselves with mentioning here the fruits 
of the Apple and Orange. 
The Apple results from the ripening of an 
inferior and compound ovary with five cells. It 
is wrapped, like the fruit of the Medlar and 
Cornel, by an expansion of the floral receptacle, 
This covering becomes fleshy and succulent, like 
the ovary with which it is joined, of which the 
endocarp alone, lining the hollow of the five cells, 
is thin and cartilaginous. The endocarp forms 
that sort of scale which often sticks between the 
teeth when we eat an apple. 
The fruit of the Orange (Fig. 245) results from 
the ripening of a superior and compound ovary? Fig. 214.—Bnnch of 
with several cells. The external skin, yellow — 
coloured, dimpled, and strewn over with glands secreting an 
odoriferous liquid, is the epicarp. The white, spongy, and dry 
layer immediately un- ee 
der the external skin a tale 
is the mesocarp. The 
thin membrane lining 
the quarters is the en- 
docarp. These quarters 
form the same number 
of compartments  to- 
wards their inner angle, 
containing seeds, and 
are filled with a novel 
and peculiar tissue, 
- Which is developed on 
the opposite wall of each compartment. It appears at first like 
slender hairs, which increase by degrees, filling up the entire. cavity, 
which is also filled with juice, constituting ultimately a succulent 
parenchyma, which forms the delicious pulp of the Orange. 
y 
Fig. 245.—Section of an Orange. 
