Why Seashells Resemble Spiraling Galaxies and the Human Heart
From The Observatory
Dr. James Bell Pettigrew was a Scottish anatomist and naturalist fascinated by the movement of living creatures. He believed that all motion—whether in animals, plants, or even the human heart—followed a spiral pattern. In 1903, at age 69, he tested his own flying machine, an “ornithopter,” which mimicked bird flight using figure-eight wing movements. The flight was short-lived, as the plane crashed after 65 feet, injuring Pettigrew. During his recovery, he focused on writing Design in Nature, a massive three-volume book that explored spirals in biology, physics, and the universe.
Pettigrew strongly disagreed with Charles Darwin’s theory of evolution. He believed that humans were specially designed, rather than evolving from simpler life forms. He also criticized Darwin’s explanations of plant movement, arguing that spirals in plants and animals were not random but followed a deeper, universal design.
His fascination with spirals led him to study the human heart in great detail. As a medical student, he developed a new dissection method using oatmeal to reveal the heart’s muscular layers. He discovered that the heart’s fibers form a continuous double spiral, much like a twisted Möbius strip. This insight won him a prestigious award and led to his lifelong research into spirals in nature.
Pettigrew also examined how spirals shaped animal movement, from bird flight to human motion. He believed the body’s bones and muscles followed spiral patterns, allowing for graceful movement. Despite his groundbreaking discoveries, Design in Nature was dismissed by scientists at the time because of its religious perspective. Today, however, his research remains an impressive study of natural patterns, blending science, art, and philosophy in a unique way.
🔭 This summary was human-edited with AI-assist.
