LABORATORY MANUAL OF PHYSIOLOGY. 



(b) Repeat the above experiment, placing a piece of absorbent 

 cotton, saturated with chloroform, under the jar. Effect ? 



(c) Repeat, using ether. Ammonia. Other gases. 



5. Keep a piece of frog's oesophagus, moistened with normal 

 saline, for several days. From time to time scrape off a bit of the 

 epithelium and examine under the microscope for active cilia. 



How long do the cilia survive after the death of the frog ? What 

 is the function of ciliated epithelium ? Where is it found in man ? 



[12] 



