,, 190 



mi 



TABLE OF CONTENTS. 



INTRODUCTION. 



PART I. GENERAL PHYSIOLOGY. 



A. The physiology of ciliary motion. 



I. a. Normal Ciliary Motion 16 



b. Ciliary Motion Modified by the Influ- 

 ence of Narcotics and Stimulants. 

 II. To Determine the Amount of Work done 



by Cilia 23 



B. The general physiology of muscle and nerve tissue. 



III. a. Elements and Conductors. 



b. Keys. 



c. Commutator. 



d. Work done by the Cell or Element. 



e. Electrical Units of Measurement 26 



IV. Batteries; Cells in Multiple Arc or in 



Series; Relation of the Current to the 

 Method of Joining the Cells 30 



V. Methods of Varying the Strength of Cur- 



rent 40 



a. The Rheostat. 



b. The Du Bois-Reymond Rheocord. 



VI. To Vary the Strength of Current through 

 the Use of (a) the Simple Rheocord, or 

 of (//) the Ludwig Compensator 43 



