xii LIST OF DIAGRAMS 



FIO- PAGE 



10. 'PULL' EXERTED BY THE LUNGS BY MEANS OF THEIR 



CONTRACTIBILITY - - 190 



11. CROSS SECTION OF THE RIGHT LUNG, SHOWING 



DIRECTIONS OF EXPANSION (KEITH) - 196 



12. RIGHT LUNG FROM THE SIDE, SHOWING DIRECTIONS 



OF EXPANSION (KEITH) - * 197 



13. VERTICAL SECTION OF THE RIGHT LUNG TO SHOW 



EXPANSION (KEITH) - 198 



14. VITAL CAPACITY (AFTER HUTCHINSON) ^ - 200 



15. POSITION OF SHADOW DURING THE SWALLOWING 



OF A MOUTHFUL OF MILK CONTAINING BISMUTH 

 CARBONATE (HERTZ) 230 



16. FUNCTIONAL DIVISIONS OF THE STOMACH - - 243 



17. SEGMENTATION IN HUMAN SMALL INTESTINES 



OCCURRING SIMULTANEOUSLY WITH PERISTALSIS 



(HERTZ) - 259 



18. AVERAGE TIME AT WHICH VARIOUS POINTS OF THE 



COLON ARE REACHED AFTER A BISMUTH BREAK- 

 FAST (HERTZ) - - - - 261 



