This document discusses Charles Darwin and the development and impact of his theory of evolution by natural selection. It provides context around Darwin's work and publications, including his early notebooks, the Linnaean Society paper, and On the Origin of Species. It also discusses how Darwin's theory revolutionized the fields of biology and natural history. The theory has become a foundational concept in science and shaped our understanding of the natural world.

1. John M. Lynch
Barrett Honors College &
School of Life Sciences

21. A “total suspension of
judgement is here our
only reasonable
resource.”
Dialogues Concerning
Natural Religion (1779)

24. 1858 was not “marked by
any of those striking
discoveries which at once
revolutionize, so to
speak, the department of
science on which they
bear.”
Presidential Address,
Linnaean Society

26. quot;When the ideas advanced
by me in this volume, or
when analogous views on
the origin of species are
generally admitted, we can
dimly foresee that there
will be a considerable
revolution in natural
historyquot;

27. “You are the greatest
Revolutionist in natural
history this century, if
not of all centuries.”
Letter to CD, 21st Nov „59

28. The detection of intelligent
design “is so unambiguous
and so significant that it must
be ranked as one of the
greatest achievements in the
history of science. The
discovery rivals those of
Newton & Einstein, Lavoisier &
Schrödinger, Pasteur &
Darwin.”
Darwin‟s Black Box, 1996, p. 233.

29.  What was before?
 What happened?
 What was after?
 How quickly did the
change happen?
 Where was there a
revolution?

30. Implications
Mechanism
Pathway
Fact

31. “[C]hange in the properties of populations of organisms or
groups of such populations, over the course of generations …
Biological evolution may be slight or substantial; it embraces
everything from slight changes in the proportions of different
forms of a gene within a population, such as the alleles that
determine the different human blood types, to the alterations
that led from the earliest organisms to
dinosaurs, bees, snapdragons, and humans.”
Douglas J. Futuyma (1998) Evolutionary Biology 3rd ed., p.4

32. ORGANIC LIFE beneath the shoreless waves
Was born and nurs'd in Ocean's pearly caves;
First forms minute, unseen by spheric glass,
Move on the mud, or pierce the watery mass;
These, as successive generations bloom,
New powers acquire, and larger limbs assume;
Whence countless groups of vegetation spring,
And breathing realms of fin, and feet, and wing

33. Limited
Variation
Speciation
due to
Environment

38.  Ifthere are variations, and
 If these are inherited, and
 If one variant is more suited to
some task that the others, and
 Ifthat task directly affects
survival and therefore
reproduction,
 Thenselection will result in
evolutionary change over time
 If the selective pressure is
applied over time.

39.  Two essays: On Upon Single Vision with Two
Eyes; The Other on Dew…and An Account of a
Female of the White Race…Part of Whose Skin
Resembles That of a Negro…By the Late W.C.
Wells…with a Memoir of His Life, Written by
Himself.
 Darwin wrote “In this paper he [Wells] distinctly
recognizes the principle of natural selection, and
this is the first recognition which has been
indicated…” (4th edition, 1866)

40.  Appendix to Naval
Timber and
Arboriculture
 Claims priority in
1860 letter to
Gardeners Chronicle
 Darwin
acknowledges this.

41.  “An Attempt to Classify the
„Varieties‟ of Animals, with
Observations on the Marked
Seasonal and Other Changes
Which Naturally Take Place in
Various British Species, and
Which Do Not Constitute
Varieties“ Magazine of
Natural History
 Natural selection working to
preserve type and essence,
i.e. selection as a negative
force.

43.  Not in originating
natural selection
 But in seeing what
natural selection was
potentially capable of
doing

44. Instinct
Classification Fossil Record
Natural
Selection
Embryology Morphology
Geographic
Distribution

47. 1837 Notebooks on Transmutation
1842 Pencil Sketch
Private
1844 Essay
1856 Natural Selection
1858 Linnean Society paper
Public
1859 Origin of Species

50. 1859Origin of Species
1870‟s Rise of Neo-Lamarckianism
1899Bumpus‟ evidence for nat. seln.
1900Re-discovery of Mendel
1930‟s “The Modern Synthesis”
1953Crick & Watson‟s Nature paper
The “Genetic Revolution”

53. “Descent with
modification through
natural selection”
 Transmutation of Species
 „Struggle‟ with biosphere
& other organisms
 A theory of heredity
 Natural Selection
 Sexual Selection

56. We have a professional
discipline and an
entirely convincing,
naturalistic explanation
of the design-like
appearance of the
natural world.

57. Natural
Selection
Economy of
Tree Thinking
Nature
Gradual Genealogical
Change Classification
Darwin
Biogeographic
Coevolution
Distribution
Sexual Selective
Selection Extinction
Deep Time

58. Tree Thinking

61. 7mya 6mya 5mya 4mya 3mya 2mya 1mya Now
Kenyanthropus
platyops Homo erectus
Homo ergaster
A. garhi Homo “Archaic”
rudolfensis Homo
sapiens
Ardipithecus Ardipithecus Australopithecus
kadabba ramidus afarensis
Sahelanthropus
tchadensis Homo
habilis
Modern
Humans
Australopithecus
anamensis
Australopithecus
Orrorin africanus
tugenesis
Paranthropus
robustus
Neandertals
Paranthropus
aethiopicus
Paranthropus
boisei

67. “Darwin had the luck to
please everybody with
an axe to grind.”
Back to Methuselah 1921

68. “The growth of a large
business is merely the
survival of the fittest …
This is not an evil
tendency in business. It
is merely the working
out of a law of nature
and a law of God.”
John D. Rockefeller, jr.

81. 2008 - 2009

82. “Evolution had become respectable.
No revolution took place, no
pyrotechnics, just a quiet change at
the top – a palace coup. Society
would never be the same.”
James Moore

83. “All
changed, chang
ed utterly:
A terrible
beauty is born.”