TABLE OF CONTENTS xix 



CHAPTER XV. Functions of Cross-striated Muscles 410 



First Section: General Physiology of Muscle and Nerve 410 



1. Fundamental Laws of Nervous Activity 410 



2. The Properties of Resting Muscles . . 412 



A. Elasticity 412 



B. Chemistry of Muscle . . . .413 



3. Stimulation of Muscles and of Nerves 414 



A. The Muscle Curve 414 



B. Rate of Transmission of a Nerve Impulse 417 



C. Mechanical Stimulation of Nerves . . 418 



D. Electrical Stimulation of Muscle and Nerve 418 



E. Effect of a Rapid Series of Stimuli 428 



F. Voluntary Contractions 430 



4. Signs of Activity in Muscle and Nerve 431 



A. Electrical Phenomena 431 



B. The Muscle Tone 434 



C. The Chemical Alterations in Muscle Due to Its Activity . . . 434 



D. Mechanical Work 435 



E. Heat Formation in Muscle 439 



5. The Central Innervation of a Skeletal Muscle 440 



6. Fatigue and Recovery of Muscles and Nerves 441 



A. General Phenomena 441 



B. Fatigue of Human Muscles and Nerves 443 



7. Rigor Mortis . 447 



8. Smooth Muscles 447 



Second Section: Reciprocal Relations between the Muscles and Other Organs of 

 the Body . 448 



CHAPTER XVI. On Sensations in General 451 



First Section : Qualitative Relations between Stimulus and Sensation . . .451 



Second Section: The Quantitative Relations between Stimulus and Sensation . 455 



1. Weber's Law 456 



CHAPTER XVII. The Sensory Functions of the Skin . . .458 



1. Sensations of Temperature 458 



2. Pressure and Touch 461 



3. The Local Sign 463 



4. Pain . 465 



CHAPTER XIX. Taste and Smell . 483 



1. Sensations of Taste 483 



2. Sensations of Smell . 486 



