Free Study Guide for Silent Spring by Rachel Carson - Book Summary
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CONFLICT Protagonist The
earth in its many aspects--earth, water, and creatures--which is under assault
by the chemical poisons, but which is also capable on its own of controlling its
insect populations. Antagonist The chemical
poisons used as insecticides in the U.S. On a different level, the manufacturers
of these chemical poisons whose economic interests run counter to the safe and
limited use of chemical poisons. Climax The mid-twentieth century
saw the climax of the use of insecticides in the war against insects.
Outcome The shocking and dangerous reduction of all the earth’s
natural resources for balancing insect populations and, simultaneously, the recognition
that chemical poisons kill insects only in the short term. In the long term, insects
develop resistance to these chemicals. The chemicals therefore kill the natural
predators of the insects and leave the way open for the pest insects to take over
in greater and greater numbers. SHORT SUMMARY (Synopsis)
Carson’s first chapter is where she derives the title of her book. She
describes a community, in which all the elements of the natural world, including
humans, work together, where people are able to enjoy the sound of birds and the
growth of spring. Suddenly, chemical poisons are introduced and spring is silenced.
There are no more birds to sing in spring. She ends the chapter on the note that
this description is constructed out of a composite of many different cities and
that it is the inevitable result of the irresponsible use of chemical poisons
for insect control. Carson’s second chapter begins the book’s goal of
informing the reader of the nature of chemical poisons and how they affect the
process of the world. In chapter 3, Carson describes in detail all the different
kinds of chemical poisons; especially those used as insecticides. She explains
how these poisons affect animals and birds by depositing themselves in fatty tissues
where they are magnified. People and animals are poisoned over a long period of
time. Poison passes through the food chain. All kinds of diseases ensue: liver
disease, hepatitis, cancer and among others. Death is a common result.
In chapter 4, Carson begins a systematic examination of all the elements of the
environment so as to show the reader how each element is affected by insecticides.
She begins in chapter 4 with water, explaining how water pollution happens from
the use of insecticides on the earth. Chemicals are washed into bodies of water
and they even seep into ground water--the source of public water supplies. Once
in the water, chemicals combine with other chemicals that have also been washed
into the water. No one knows the likely results of the combination of chemicals
or the natural chemical changes that happen to any chemical when it is released
into the world. Chapter 5 describes the soil. It describes how soil is made out
of the bodies of living creatures and how multiple living creatures live in the
earth, creating new earth every day. Insecticides kill this multitudinous life
and insecticides remain in the soil for years after their use. Chapter 6 describes
plants as weed killers affect them. Carson documents the huge bird kills caused
by weed killers. Weeds are killed by utility companies so they can run their lines
and by highway departments to keep the highways clear. It’s very possible to kill
unwanted plants in more responsible ways, ways that don’t threaten the ecosystem
of the area. Chapter 7 begins a new section of the book on the affects
of massive spraying campaigns. It is called "Needless Havoc" and describes
the massive spraying operations, their ineffectiveness in killing target insects,
and the horrible record of the massive killing of non-targeted birds and animals.
One campaign against the Japanese beetle in the Midwest ignored the fact that
the eastern states had successfully controlled the beetle with natural enemies
of the beetle. In the Midwest, massive spraying occurred, killing huge numbers
of wildlife: birds and animals. Carson notes that there is very little funding
for natural controls of insects. Chapter 8 is devoted to the fact that birds are
killed en mass with any spray operation since birds eat insects and worms. She
focuses on the fight against Dutch elm disease with DDT. Birds were killed in
massive numbers and the DDT didn’t stop Dutch elm disease for any significant
period of time. Alternative solutions would have been simple and cheaper. Chapter
9 is devoted to the massive killing of salmon when forestry officials wanted to
kill the spruce budworm that was threatening forests. All river life was affected.
Even the salmon that weren’t killed were affected since their food was killed.
Alternatives would have controlled the spruce budworm more effectively: natural
parasites of the insect could have been introduced and natural diseases of the
insect could have been introduced. Chapter 10 describes the campaign against the
gypsy moth with massive spraying from airplanes of insecticides. Authorities even
included cities, even though the gypsy moth is a forest dweller. People were sprayed
as they went about their lives innocent of what was happening to them. Dairy farms
and vegetable farms were wiped out, their produce rendered unfit for human consumption.
Chapter 11 extends the problem of massive uses of insecticides to individual use
of them. Every person on earth has some DDT residue in his or her body. Insecticides
contaminate everyone. Chapter 12 introduces another section of the book,
that which deals with the affects of chemical poisons on the human body. Chapter
12 informs the reader of the make-up of the human body--its ecology, as Carson
terms it, which is upset over a period of time of repeated poisonings. Chapter
13 describes the cells are the focus of this chapter. Through radiation and chemical
poisoning, the natural process of cell oxidation is damaged and cells become cancerous.
Scientists have also traced mutations to this kind of damage, including Down’s
Syndrome. Chapter 14 is devoted to the research linking cancer and insecticide
poisoning. Chapter 15 begins the last section of the book, that devoted
to a careful description of insects, especially as they are so quick to develop
resistance to insecticides. Carson explains that nature already has insect controls
in place. Scientists should work with these natural controls to deal with pest
insects. Only two per cent of entomologists are in this line of research. Chapter
16 describes the dangers of insects developing resistance to insecticides. Because
insecticides don’t just kill the target insect, but also its natural predator,
when the target insect develops a resistance and returns, it has no natural check
on its growth. This problem becomes most serious with disease-carrying insects.
Carson ends on a conclusion chapter which is devoted to the description
of alternative methods of insect control. To control insects, we can introduce
their natural enemies, introduce their natural diseases, and introduce parasites
that will kill them. We can also sterilize them. Carson describes several campaigns
in which these methods have worked rapidly, safely, and cheaply.
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