LIST OF ILLUSTRATIONS 



TO. 



Plate I. Eecord of a Series of Successive Twitches of 

 a Hyoglossus Muscle Stimulated, by Make Shocks, once 

 each Second To face p. 70 



Plate II. Eecobd of the Blood Pbessuee and Eespiration 



in a Rabbit dubing Asphyxia „ 182 



1. The Daniell Battery (McKendrick) i*age 2 



2. The Gbenet Batteby (McKendeick) 2 



3. The Bunsen Batteby (McKendbick) 3 



4. The Gbove Batteby 3 



5. The Leclanche Battery (McKendrick) 4 



6. The Induction Coil (McKendrick) 4 



7. Diagram of the Currents Induced in the Secondary Coil . . G 



8. Aeeangement of Appaeatus fob Equalising the Make and Bkeak 



Shocks 7 



9. To Illusteate the Action of Neef's Hammee ..... 8 



10. To Illustrate the Action of Neef's Hammee with the Helmholtz 



Modification 9 



11. Two Foems of Mercury Key | .„ 



12. Two Forms of Meecuey Key j 



13. Simple Form of Spring Key 10 



14. Two Forms of the Du Bois Key i . , 



15. Two Forms of the Du Bois Key J 



16. Plan of the Arrangement of the Du Bois Key as a Short-circuit- 



ing Key 11 



17. Aeranged as a Simple Break Key. Not to be used aftek this 



Method in a Secondaey Ciecuit 11 



18. Pohl's Commutatoe ........... 12 



19. A Foem of Cut-out Key ......... 13 



20. Aeeangement of Apparatus foe Making Use of Single Induced 



Shocks 14 



21. Arrangement of Apparatus to Show the Break Extra-current . 14 



22. Leo Muscles of the Frog seen from the Inner Side . . . . 17 



23. Leg Muscles of the Frog seen from the Outer Side ... 17 



24. Gasteocnemius-sciatic Peepabation 18 



25. Aeeangement of Appaeatus for Showing Make Extea-cubbent . 19 



26. The Relations of the Hyoglossus in the Fbog 20 



27. Two Records of the Vibrations of a Tuning-fork Vibrating at the 



Rate of 10 per sec 22 



28. A Time-marker or Chronograph (McKendrick) 23 



29. A Spring Chronograph 24 



30. Lower Part of Drum to show Method of Driving the Cylinder 



at Diffeeent Rates 24 



