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MANUAL OF NATURE STUDY. 
principle of the seed was introduced by the pollen, 
afterward the sap carried food from the roots and 
leaves and fed this new life. This new life is the 
superintendent of the seed factory. What part of 
the flower bears the pollen ? How does it get out 
of the anthers ? When must it get out in order to 
give this life to the ovules ? (When the stigma is 
moist and sticky, ready to receive the pollen.) 
Suppose the pollen waits until the stigma dries off, 
then what will happen to the ovules? (They will 
shrivel up and the flower will die.) Suppose the 
pollen to fall out before the stigma is ready to re¬ 
ceive it, what then will the ovules do ? The pollen 
then must neither be tardy nor too hasty if it 
expects to give the ovules life. 
Sometimes insects carry pollen from some other 
flowers to give life to ovules of a flower, whose pol¬ 
len has been too late or too soon. In that case 
ovules do not shrivel, but grow into mature seed. 
Teacher should here explain the process of fertiliz¬ 
ation by bees, butterflies, humming birds, etc., 
allowing the children to assist in the discussion as 
far as possible. Kindle the interest of pupils into 
daily observation of insect-life among the flowers. 
Collect pods from shepherd’s purse, mustard of 
any form, bean, Judas tree, locust, pea, monkshood, 
maple, Jamestown weed, or any others, and devel¬ 
op the use of the pod. Collect some real green 
