CONTENTS. 



V. FALLACIES WITH THE LEVER. 



PAGE 



1. The Angular Crank . . . . . ..... 104 



2. The Self-moving Mill . . . . . 1 1 1 



PART II. 



PARADOXES OF PHYSICAL STATE. 

 I. CURIOSITIES OF FREEZING AND MELTING. 



1. Ice melting while growing Colder . . . .117 



2. Ice melted without Heat or Cold "' '. ' . .120 



3. Cutting Ice without severing the Parts -*.- .- .. 123 



4. Ice unmelted in a Vessel of Boiling Water V, ' . 126 



5. Expansion and its Opposite both produced by the 



Same Cause . V. -:- . -> - . * "> . 128 



6. Strong Vessel burst by cooling Water in it -. * 134 



II. CURIOSITIES OF STEAM AND VAPORISATION. 



1. Strong Vessel burst by heating Water in it . .138 



2. Explosion or Collapse? ,. , _ .. . .., -. . 142 



3. Water boiled by Cold instead of by Fire or Flame . 145 



4. More Cooling with less Cold Water . . t . , v. 148 



III. CURIOSITIES OF HEAT CONDUCTION. 



1. A Vessel too Hot to boil Water . . >* . ... 152 



2. Dipping the Hand into Molten Lead . > .. 155 



3. Walking over Red-hot Stones . . . . ; ..156 



IV. CURIOSITIES OF VAPOUR JETS. 



1. Passing the Hand through a Live-steam Jet . . 160 



2. The Stronger overcome by the Weaker , J 6 J 



V. CURIOSITIES OF VOLATILE LIQUIDS. 



1. Freezing produced by Boiling. >>- . . .165 



2. Ice as a Heating Agent . . . . -171 



viii 



