x LIST OP ILLUSTRATIONS 



SECTION V 



Normal Processes of Energy Metabolism 

 JOHN- R; Mi'RUN 



FIGURE **< 



1. The smaller respiration apparatus of Pettenkofer and Voit .... 517 



2. Diagram of the Jaquet-Grafe respiration apparatus used by Krogh 



arid Lindhard 520 



3. Haldane respiration apparatus 521 



4. Respiration apparatus of Regnault and Reiset 522 



5. Respiration apparatus of Hoppe-Seyler . 523 



6. Diagram of the system of ventilation in the closed circuit apparatus of 



Atwater and Benedict 524 



7. Diagram of the respiration apparatus used by Benedict and Talbot in 



their study of the gaseous metabolism of infants 526 



8. Respiration incubator ...... . . 529 



9. Micro-respiration apparatus of Winterstein 530 



10. Mouthpiece of Denay rouse with nose clip attached 532 



11. Pneumatic nosepiece of Benedict . 533 



12. The half mask as used by Boothby 534 



13. Air valve of Loven 534 



14. Metal air valve of Thiry . . . . , 535 



15. Tissot spirometer with capacity of 50 liters 536 



16. Spirometer of Boothby and Sandiford as used in the writer's 



laboratory * . . * ........ 537 



17. Respiration apparatus of Douglas . 538 



18. Respiration apparatus of Zuiitz and Geppert 539 



19. The Haldane air analyser as used by Boothby . 540 



19-a. Henderson modification of Haldane apparatus 541 



20. The air analyser of Krogh . 542 



21. Tho Benedict universal respiration apparatus as employed by the 



writer 545 



22. Portable respiration apparatus of Benedict and Collins 547 



23. The bomb calorimeter of Riche for use with Berthelot bomb ... 569 



24. The air calorimeter of Lefevre .* 572 



25. Cross section of chair calorimeter of Benedict and Carpenter . . . 574 



26. The Sage calorimeter at Bellevue Hospital 575 



27. The wiring diagram of the observer's table with the Sage calorimeter . 576 



28. Diagram of the Atwater, Rosa, Benedict respiration calorimeter as 

 prepared by DuBois for the Sage calorimeter 577 



29. The small calorimeter at Cornell University Medical College shown 



in process of construction . 579 



30. Richet siphon calorimeter 582 



31. The second calorimeter of Rubner SS3 



32. Curves showing the total heat output per minute and corresponding- 



external muscular work per minute, expressed in calories, for sub- 

 ject riding with constant load 1.5 amperes at varying speeds . . 589 



