I 5 8 
THE FAIRY-LAND OF SCIENCE. 
FIG. 40. Juicy cells in a piece 
of orange. 
noids. This food is all ready for the plantlet to use, 
and it sucks it in, and works itself into a young- plant 
with tiny roots at one end, and a growing shoot, with 
leaves, at the other. 
But how does it grow? What makes it become 
larger? To answer this, you must look at the second 
thing I asked you to bring 
a piece of orange. If 
you take the skin off a 
piece of orange, you will 
see inside a number of 
long-shaped transparent 
bags, full of juice. These we call cells, and the flesh 
of all plants and animals is made up of cells like these, 
only of various shapes. 
In the pith of elder 
they are round, large, 
and easily seen (a, 
Fig. 41); in the stalks 
of plants they 
long, and lap 
each other (b, 
41), so as to 
the stalk strength to 
stand upright. Some- 
times many cells 
growing one on the 
top of the other, FIG. 41. Plant-cells. 
break into one tube * n pith of elder. 
and make vessels. 
But whether large or small, they are all bags grow- 
ing one against the other. 
Plant-cells. 
a, Round cells 
t>, Long cells 
in fibres of a plant. 
