''The Map that Changed the World'' is a 2001 book by
Simon Winchester
Simon Winchester (born 28 September 1944) is a British-American author and journalist. In his career at ''The Guardian'' newspaper, Winchester covered numerous significant events, including Bloody Sunday (1972), Bloody Sunday and the Watergate S ...
about English geologist
William Smith and his great achievement, the first
geological map
A geological map or geologic map is a special-purpose map made to show various geological features. Rock (geology), Rock units or stratum, geologic strata are shown by color or symbols. Bed (geology), Bedding planes and structural features such ...
of England, Wales and southern Scotland.
Smith's was the first national-scale geological map, and by far the most accurate of its time. His pivotal insights were that each local sequence of rock strata was a subsequence of a single universal sequence of strata and that these rock strata could be distinguished and traced for great distances by means of embedded fossilized organisms.
Winchester's book narrates the intellectual context of the time, the development of Smith's ideas and how they contributed to the
theory of evolution
Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certai ...
and more generally to a dawning realisation of the true age of the Earth. The book describes the social, economic or industrial context for Smith's insights and work, such as the importance of coal mining and the transport of coal by means of canals, both of which were a stimulus to the study of geology and the means whereby Smith supported his research. Landowners wished to know if coal might be found on their holdings. Canal planning and construction depended on understanding the rock and soil along its route.
Related topics, such as the founding of the
Geological Society of London
The Geological Society of London, known commonly as the Geological Society, is a learned society based in the United Kingdom. It is the oldest national geological society in the world and the largest in Europe, with more than 12,000 Fellows.
Fe ...
, are included. Smith's map was published by
John Cary, a leading map publisher. Winchester describes the practice of publishing at the time as well as the system of
debtor's prison
A debtors' prison is a prison for Natural person, people who are unable to pay debt. Until the mid-19th century, debtors' prisons (usually similar in form to locked workhouses) were a common way to deal with unpaid debt in Western Europe.Cory, L ...
s through his account of the sojourn of Smith in the
King's Bench Prison.
Book format details
''The Map that Changed the World'' was published in 2001 by
HarperCollins
HarperCollins Publishers LLC is a British–American publishing company that is considered to be one of the "Big Five (publishers), Big Five" English-language publishers, along with Penguin Random House, Hachette Book Group USA, Hachette, Macmi ...
, while Winchester retains the copyright. The first edition is illustrated by Soun Vannithone. It includes an extensive index, glossary of geological terms, recommended reading and (lengthy) acknowledgements, as well as many stippled images (of consistent style). The last numbered page is page 329. There are 16 chapters, and single clay paper sheet in the middle containing colour plates of Smith's famous map and a modern geological map for comparison. (Smith's map is less complete, but essentially in agreement with the modern map). An image of Smith's first table of strata, and first (circular) geological map are also included. Just after the contents section, there is a 5-page section giving extensive details on the illustrations (such as the names of the chapter heading fossils). Each chapter begins with an inset image of a fossil, and a large first Capital. The dust-cover of the book can be removed and unfolded to reveal a larger print of the map in question.
The contents

One: Escape on the Northbound Stage
Two: A Land Awakening from Sleep
Three: The Mystery of the Chedworth Bun
Four: The Duke and the Baronet's Widow
Five: A Light in the Underworld
Six: The Slicing of Somerset
Seven: The View from York Minster
Eight: Notes from the Swan
Nine: The Dictator in the Drawing Room
Ten: The Great Map Conceived
Eleven: A Jurassic Interlude
Twelve: The Map That Changed the World
Thirteen: An Ungentlemanly Act
Fourteen: The Sale of the Century
Fifteen: The Wrath of Leviathan
Sixteen: The Lost and Found Man
Seventeen: All Honor to the Doctor.
Escape on a Northbound Stage
A plausible but whimsical description of the day on which William Smith was let out of debtor's prison. It inducts the reader into the interpretation of the time and place to be held consistently throughout the book. Smith is described physically, as heavy-set balding and plain-looking, and emotionally as quitting London in disgust. He is leaving London with nothing other than his wife, nephew, and such possessions as they can carry. It is implied that these circumstances are the result of unjustified discrimination from the scientific elite. The chapter ends with a brief note that 12 years later the injustice was in some measure redressed.
A Land Awakening from Sleep
A description of the social circumstances of the time of the birth of Smith. It begins by emphasising that the date of 4004 BC, for the beginning of the world, computed from the genealogy tables of the Bible, was firmly accepted by most; the idea that the world was any older was considered implausible. Explanations based on
Noah's flood
The Genesis flood narrative (chapters 6–9 of the Book of Genesis) is a Hebrew flood myth. It tells of God's decision to return the universe to its pre- creation state of watery chaos and remake it through the microcosm of Noah's ark.
The B ...
were acceptable in scientific circles. But, in the year 1769, as Smith was born,
James Watt
James Watt (; 30 January 1736 (19 January 1736 OS) – 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1776, which was f ...
was patenting a steam engine, cloth manufacture was improving, the postal service was viable. New technology and information was rapidly becoming available or even common-place. "William Smith appeared on the stage at a profoundly interesting moment: he was about to make it more so."
These claims by Winchester are inaccurate. Geologists had begun to recognize that the earth was old in the late 1600s.
Archbishop Ussher's 4004 BC date for the
Creation of the Earth, along with similar estimates by
Isaac Newton
Sir Isaac Newton () was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author. Newton was a key figure in the Scientific Revolution and the Age of Enlightenment, Enlightenment that followed ...
and other academics of the 17th century, was merely a historical footnote in academia by Smith's lifetime. In 1787, Scottish geologist
James Hutton
James Hutton (; 3 June Old Style and New Style dates, O.S. 1726 – 26 March 1797) was a Scottish geologist, Agricultural science, agriculturalist, chemist, chemical manufacturer, Natural history, naturalist and physician. Often referred to a ...
argued that the Earth's age was immeasurable.
Smith was in no way challenging the church or risking jail – American paleontologist
Stephen Jay Gould
Stephen Jay Gould ( ; September 10, 1941 – May 20, 2002) was an American Paleontology, paleontologist, Evolutionary biology, evolutionary biologist, and History of science, historian of science. He was one of the most influential and widely re ...
refuted such claims in his review of ''The Map That Changed the World''.
In fact, Smith's single-minded focus on recognizing layers made him rather late to realize that the Earth was old. Additionally, Smith's focus on recognizing layers based on the fossils in them was not unique. Though he was especially thorough, similar work (especially on the mainland of Europe) around the same time independently cemented the principle that fossils change over time and can be reliably used to identify layers.
Martin Rudwick's ''
Earth's Deep History: How It Was Discovered and Why It Matters'' is perhaps the most accessible account of the development of geology in this time interval.
Footnotes
External links
Presentation by Winchester on ''The Map that Changed the World'', September 7, 2001 C-SPAN
Cable-Satellite Public Affairs Network (C-SPAN ) is an American Cable television in the United States, cable and Satellite television in the United States, satellite television network, created in 1979 by the cable television industry as a Non ...
{{DEFAULTSORT:Map that Changed the World, The
Books by Simon Winchester
2001 non-fiction books
Geology books
British biographies
History books about the United Kingdom
HarperCollins books
Geologic maps