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CONTENTS
| PAGE
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| Source of muscular energy—Food stuffs—Milk—Muscle as an engine—Repair of muscle—Ratio of mechanical energy and heat—Fatigue of muscle—Athletics | 131 | |
| Electrical phenomena of muscle—Current of resting muscle—Current of acting muscle—Negative variation—Animal electricity—Electric fishes—Resemblance of electric organ to muscle—Relation of muscular motion to nervous system—Conclusion | 161 | |
| Index | 201 | |
