618 



RESPIRATORY RATE OF SCIATIC NERVE OF FEOG 



hook-shape and the nerves wound around them. The hooks reached 

 to within 1 to 2 mm. of the surface of the solution and the suspended 

 tissue dipped into it. Stimulation was made with a Harvard in- 

 ductorium, giving maximal shocks. Readings were first made with 



TABLE II.* 

 A , Weight of Each Tissue 140 mg. 



B, Weight of Each Tissue 50 mg. 



* In the first column are given the intervals of time between the measurements, 

 by hours. The first column under each tissue shows the reaction time in sec- 

 onds at the end of each time interval. The second column contains the corre- 



100 



spondmg rates of reaction. Rate = — r- . Temperature 18-19°C. 



seconds 



the nerve at rest, then during stimulation, and lastly at rest again. 

 The frequent inversion of the tube kept the tissues bathed with the 

 solution and cooled. With this method it was found impossible 

 constantly or noticeably to increase the rate of carbon dioxide out- 



