EXPANDING
HORIZONS
1700 –
74 Nature does not proceed
by leaps and bounds
Carl Linnaeus
76 The heat that disappears
in the conversion of water
into vapor is not lost
Joseph Black
78 Inflammable air
Henry Cavendish
80 Winds, as they come
nearer the equator,
become more easterly
George Hadley
81 A strong current comes
out of the Gulf of Florida
Benjamin Franklin
82 Dephlogisticated air
Joseph Priestley
84 In nature, nothing is
created, nothing is lost,
everything changes
Antoine Lavoisier
85 The mass of a plant comes
from the air
Jan Ingenhousz
86 Discovering new planets
William Herschel
88 The diminution of the
velocity of light
John Michell
90 Setting the electric fluid
in motion Alessandro Volta
96 No vestige of a beginning
and no prospect of an end
James Hutton102 The attraction of mountains
Nevil Maskelyne104 The mystery of nature
in the structure and
fertilization of flowers
Christian Sprengel105 Elements always combine
the same way
Joseph ProustA CENTURY
OF PROGRESS
1800 –110 The experiments may
be repeated with great
ease when the Sun shines
Thomas Young112 Ascertaining the relative
weights of ultimate particles
John Dalton114 The chemical effects
produced by electricity
Humphry Davy115 Mapping the rocks of
a nation
William Smith116 She knows to what tribe
the bones belong
Mary Anning118 The inheritance of
acquired characteristics
Jean-Baptiste Lamarck119 Every chemical compound
has two parts
Jöns Jakob Berzelius120 The electric conflict is
not restricted to the
conducting wire
Hans Christian Ørsted121 One day, sir, you may
tax it
Michael Faraday122 Heat penetrates every
substance in the universe
Joseph Fourier124 The artificial production
of organic substances
from inorganic substances
Friedrich Wöhler126 Winds never blow in
a straight line
Gaspard-Gustave de Coriolis127 On the colored light of
the binary stars
Christian Doppler128 The glacier was God’s
great plough
Louis Agassiz130 Nature can be represented
as one great whole
Alexander von Humboldt