xiv EXPERIMENTAL PHYSIOLOGY 



MO. PAGE 



174. The Course of the Light in the Indirect Method ok Employing 



the Ophthalmoscope 223 



175. The Course of the Light in Examining the Eye by the Direct 



Method 223 



17(1. I'uikstlky-Smith's Perimeter (Halliburton) 225 



177. A Pebimetbic Chart for the Right Eye (Halliburton) . . . 226 



The experiments and descriptions of apparatus for elementary 



classes will be found in the following positions, and are indicated by 

 being printed in heavy type : — 



PAGE 



The Induction Coil 4 



Description of the More Important Keys 10 



The Nerve-muscle Preparation ......... 16 



The Hyoglossus Preparation 20 



The Simple Lever 25 



Minimal and Maximal Excitation 26 



The Simple Muscle Curve 30 



The Work Performed during a Twitch 50 



Tetanisation of a Muscle 65 



Thickening of a Muscle during a Twitch 71 



Independent Muscular Excitability 76 



Stimulation of Nerve 86 



Record of the Beat of the Frog's Heart 97 



Excision of the Frog's Heart 101 



Action of the Vagus upon the Frog's Heart 120 



Reflex Action Studied on the Frog 214 



