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Examination of the analogous Effects produced by the
continued Application of Heat to Water in the liquid
State
Process of Boiling
Reconversion of Steam into Water
Conversion of Water into Steam
Latent Heat of Steam
Boiling Point varies
Page
-
102
104
104.
Different in different Places
Inquiry whether a Diminution of Pressure will produce a
corresponding Effect on the boiling Point -
Table showing the Temperature at which Water will boil
under different Pressures of the Atmosphere
Mechanical Force of Steam
Facts to be observed in
109
112
113
115
FURTHER DISCOVERIES OF WATT.
Watt finds that Condensation in the Cylinder is incompatible
with a due Economy of Fuel
Conceives the Notion of condensing out of the Cylinder
Discovers separate Condensation
Invents the Air Pump
His first Experiments to realise these Inventions
His experimental Apparatus
His experimental Models fitted up at Delft House, in Glasgow 128
Difficulties of bringing the improved Engines into Use
Watt first employed by Roebuck as a Civil Engineer
His Partnership with Roebuck
Abstract of the Act of Parliament for the Extension of his
Patent
132
Description of his single-acting Steam Engine
133
Experimental Engine at Kinneal
CHAP. VI.
WATT'S ENGINES.
Correspondence of Watt with Smeaton
Failure of Condensation by Surface
Improvements in Construction of Piston
Method of Packing
Improvements in boring the Cylinder
Disadvantages of the new compared with the old Engines
Greatly increased Economy of Fuel
Economy of the Engine
Expedients to force the new Engines into Use
Correspondence of Boulton
Correspondence with Smeaton.
Efficiency of Fuel in the new Engines
Discovery of the expansive Action of Steam.
Watt states it in a Letter to Dr. Small
158
162
Its Principle explained
Mechanical Effects resulting from it
Computed Effect of cutting off Steam at different Portions
of the Stroke
Produces a variable Power
Expedients for equalising the Power
Expansive Principle in Watt's Engines limited
Its more extensive Application in the Cornish Engines
Law of Mariotte
Relation between Temperature and Pressure of common
Steam
Effects of the Expansion of common Steam Mechanical Effects of Steam
Method of equalising the expansive Force
Hornblower's Engine
tures
Watt's Attempts to extend the Steam Engine to Manufac-
178
180
181
182
183
Papin's projected Applications of the Steam Engine Savery's Application of the Engine to move Machinery Jonathan Hull's Application to Water Wheels
Champion of Bristol applies the Atmospheric Engine to raise Water
Stewart's Application of the Engine to Mill-work
Wasborough's Application of the Fly-wheel and Crank
Reasons why Watt's single-acting Steam Engine was not
adapted to produce continuous uniform Motion of Ro-
Methods of connecting the Piston-rod and Beam in the
Proportion of Stroke to Diameter of Cylinder
Duty of Engines
Cornish System of Inspection
Table showing the Improvement of Cornish Engines
Beneficial Effects of Cornish Inspection
Successive Improvements on which the increased Duty of
Engines depends, traced by John Taylor in his "Records
of Mining"
CHAP. X.
299
LIFE OF WATT.
Watt's Friends and Associates at Birmingham
His Invention of the Copying Press
Heating Apartments and Buildings by Steam
Watt's Machine for drying Linen
His Share in the Discovery of the Composition of Water
The Merit of this Discovery shared between Cavendish,
Lavoisier, and Watt
Anecdote of Watt's Activity of Mind
His Introduction of the Use of Chlorine in Bleaching
One of the Founders of the Pneumatic Institution at Clifton
His first Marriage
Death of his first Wife
His second Marriage
302
303
305
309
Death of his younger Son
Extracts from his Letters
311
312
Character of Watt by Lord Brougham
Extract from Sir Walter Scott's "Monastery" on the Cha-
313
racter of Watt
314
Sketch of the Life of Watt from the "Scotsman
Inscription by Lord Brougham on the Pedestal of the Monu-
ment in Westminster Abbey
320