in the seed beside or around them 
STORAGE OF FOOD IN THE CELLS “15 
which the cotyledons have been cut, and as many which have not 
been mutilated, and allow the roots to extend into the water. Let 
them grow for some days, or even weeks, and note results. 
‘16. Food stored in Seeds in Relation to Growth after 
Germination. — If two kinds of seeds of somewhat similar 
character, one kind large and the other small, are allowed 
to germinate and grow side by side, some important infer- 
ences may be drawn from their relative rate of growth. 
‘EXPERIMENT VI} 
Does the Amount of Material in the Seed have anything to do with 
the Rate of Growth of the Seedling ?—-Germinate ten or more 
clover seeds, and about the same number of peas, on moist blotting 
paper under a bell-jar. After they are well sprouted, transfer both 
kinds of seeds to fine cotton netting, stretched across wide-mouthed 
jars nearly full of water. The roots should dip into the water, but 
the seeds must not do so. Allow the plants to grow until the peas 
are from four to six inches high. 
Some of the growth in each case depends on material 
gathered from the air and water, but most of it, during the 
very early life of the plant, is due to the reserve material 
stored in the seed. Where is it in 
the seeds so far studied? Proof? 
~17. Storage of Food outside of 
the Embryo. — In very many cases : G 
the cotyledons contain little food, I Ir 
but there is a supply of it stored Fie.5.—Seeds with Endosperm, 
Longitudinal Sections. 
: I, asparagus (magnified). 
(Figs. 2, 5, and 6). II, poppy (magnified). 
~ 18. Examination of the Four-o’clock Seed. — Examine the exter- 
nal surface of a seed? of the four-o’clock, and try the hardness of 
1 May be a home experiment. 2 Strictly speaking, a fruit. 
