THE LIVING PLANT FORMS STARCH 1111 
Test for starch in Indian corn. Split a kernel of 
Indian corn and scrape out some of the endosperm or 
meat. Place it in water and 
test with iodine. What is the 
result? Test grains of sweet 
corn'in the same way. What 
is the result? The starch in 
the sweet corn was changed to 
sugar and stored in the seed in 
the form of sugar. The sugar 

Fic. 146. Variegated leaf of grass beet1s areservoir for food. Itis 
pan a not stored as starch but as sugar. 
Starch formed in green © 
leaves. ‘Take a few green 
leaves which have been in 
the sunlight through the 
day. Immerse them over- 
night in a strong solution 
of chloral hydrate in the 
proportion of five ounces of 
chloral hydrate? to one-half 
a tumbler of water. This 
will remove the green col- 

our and the leaves become 
Fia. 147. Variegated leaf of abutilon. 
1 A variety of maize of a sweet taste. 
2 Chloral hydrate can be obtained at the drug store for about one 
and sixpence an ounce. More accurately, use eight grams chloral 
hydrate to 5 c.c. of water. 
