Metaphor Analysis Worksheet — Fumifugium, Silent Spring & Classical Rhetoric (Age 20, College)

Instructions

This worksheet explores the power of metaphor in persuasive writing, focusing on two seminal environmental texts written centuries apart and the rhetorical theory that explains their effectiveness. Read each section carefully and answer the questions to the best of your ability. The goal is to analyze not just what the metaphor is, but what it does—how it shapes the reader's understanding and emotional response.

Part 1: The Anatomy of Metaphor

In his book Classical Rhetoric for the Modern Student, Edward P.J. Corbett explains that a metaphor works by asserting an identity between two dissimilar things. This comparison can be broken down into two parts:

• Tenor: The primary subject or idea being described.
• Vehicle: The concept or image used to illuminate the tenor.

For example, in the metaphor "The world is a stage," the tenor is "the world," and the vehicle is "a stage."

Activity: Identify the Tenor and Vehicle

For each metaphor below, identify the tenor and the vehicle.

1. "All our words are but crumbs that fall down from the feast of the mind." - Khalil Gibran
   Tenor: ____________________
   Vehicle: ____________________


2. "A good conscience is a continual Christmas." - Benjamin Franklin
   Tenor: ____________________
   Vehicle: ____________________

Part 2: John Evelyn's Fumifugium (1661)

In one of the earliest essays on air pollution, John Evelyn describes the effect of coal smoke on 17th-century London. His choice of metaphor was intended to shock a populace largely accustomed to the smoke. Read the following excerpts and answer the questions.

"...this Glorious and Antient City... should wrap her stately head in Clowds of Smoake and Sulphur, so full of Stink and Darknesse, I deplore with just Indignation."

1. Evelyn uses personification, a type of metaphor, to describe London. What human action is the city (the tenor) said to be performing? What does this metaphor suggest about the city's character and the nature of the pollution?

 

2. What are the connotations of the word "Sulphur"? Why would Evelyn choose this specific vehicle to describe the smoke, considering the religious context of his time?

"[It is] that Hellish and dismall Cloud of SEA-COALE which is not only perpetually imminent over her head... but so universally mixed with the otherwise wholesome and excellent Aer, that her Inhabitants breathe nothing but an impure and thick Mist, accompanied with a fuliginous and filthy vapour..."

3. The primary metaphor here compares the cloud of coal smoke to something else. What is the vehicle?

 

4. What is the rhetorical effect of this "Hellish" metaphor? How does it frame the problem of pollution not just as a physical nuisance, but as a moral or spiritual crisis?

Part 3: Rachel Carson's Silent Spring (1962)

Rachel Carson's book ignited the modern environmental movement by revealing the dangers of synthetic pesticides. As scholar James E. Burke has noted, her persuasive power came not just from facts, but from her masterful use of metaphor. Read these excerpts and answer the questions.

"For the first time in the history of the world, every human being is now subjected to contact with dangerous chemicals... This birth-to-death contact with dangerous chemicals is a situation unprecedented in the world’s history. These chemicals are the sinister and little-recognized partners of radiation in changing the very nature of the world—the very nature of its life."

1. Carson creates a metaphor by pairing chemicals with another threat. What is the vehicle she uses here ("partners of...")? What anxieties, prevalent in the early 1960s, does this comparison tap into?

"We are told that the enormous task of wiping out insects... is being undertaken for the protection of health. But the problem is not so simple. The chemical war is never won, and all life is caught in its violent crossfire."

2. Identify the central metaphor Carson uses to describe the campaign of pesticide use. What is the tenor and what is the vehicle?

Tenor: ____________________
Vehicle: ____________________

 

3. What are the implications of this "war" metaphor? What does it imply about humanity's relationship with nature? Who are the casualties in this "violent crossfire"?

Part 4: Synthesis and Analysis

Consider the works of Evelyn and Carson together, using the principles of rhetoric to guide your analysis.

1. Compare and contrast the dominant metaphors used by Evelyn and Carson. How do their choices (e.g., Hell/Sin vs. War/Poison) reflect the cultural, scientific, and historical contexts of their respective eras?

 

2. Drawing on Corbett's ideas, explain why a powerful metaphor can be more persuasive than a simple, literal statement. For example, why is Carson’s “chemical war” more impactful than saying “using pesticides has unintended consequences”?

Answer Key

Part 1: The Anatomy of Metaphor

1. Tenor: All our words. Vehicle: Crumbs that fall from the feast of the mind.
2. Tenor: A good conscience. Vehicle: A continual Christmas.

Part 2: John Evelyn's Fumifugium

1. The city is said to "wrap her stately head" in clouds of smoke. This personification gives London a noble, feminine quality, like a queen or dignified lady. The pollution is therefore an indignity, a defilement of this noble character, rather than just a neutral atmospheric condition.
2. In the 17th century, "Sulphur" had strong biblical connotations, being directly associated with Hell, fire, and brimstone. By using it as a vehicle, Evelyn frames the man-made pollution as a hellish, demonic force, imbuing the problem with a sense of sin and divine judgment.
3. The vehicle is "Hell" (or "that Hellish and dismall Cloud"). The tenor is the cloud of sea-coal smoke.
4. This metaphor elevates the problem from a civic issue to a profound moral and spiritual one. It suggests that the pollution is not merely unpleasant but is fundamentally evil and corrupting. For a deeply religious audience, this framing would create a sense of urgency and moral outrage that a simple description of "dirty air" could not achieve.

Part 3: Rachel Carson's Silent Spring

1. The vehicle is "radiation." In the early 1960s, during the height of the Cold War and public fear of nuclear fallout, radiation was a terrifying, invisible, and insidious threat. By linking pesticides to radiation, Carson frames them as an equally sinister and pervasive danger that can alter the very fabric of life.
2. Tenor: The campaign of pesticide use. Vehicle: War.
3. The "war" metaphor implies a state of total conflict, with victors and vanquished. It suggests an aggressive, conquering attitude toward nature, rather than one of coexistence. The casualties are not just the target insects, but "all life"—including birds, fish, and humans—caught in the indiscriminate "crossfire." This framing transforms pesticide applicators from problem-solvers into soldiers in a destructive and ultimately unwinnable war against the ecosystem itself.

Part 4: Synthesis and Analysis

1. Evelyn's metaphors are rooted in a pre-industrial, religious worldview. His vehicles—"Hell," "Sulphur," a defiled noble lady—draw their power from shared concepts of sin, divinity, and social hierarchy. His argument is fundamentally a moral and aesthetic one. Carson's metaphors, by contrast, are rooted in a modern, scientific, post-war context. Her vehicles—"war," "radiation," "poison"—draw power from contemporary anxieties about technology run amok, Cold War conflict, and unseen chemical threats. Her argument is framed as a matter of public health and ecological survival.
2. A literal statement presents a fact, but a metaphor presents a framework for understanding that fact. A metaphor engages the imagination and emotions by connecting a new or complex idea (the tenor) to a familiar and emotionally resonant one (the vehicle). "Using pesticides has unintended consequences" is a dry, neutral statement. "The chemical war" is an urgent call to action. It creates an entire narrative of conflict, innocence, and casualties, forcing the reader to take a side and feel the gravity of the situation in a way that a literal statement cannot. It reframes the issue and dictates the emotional response.