■Estimoted or calculated from available data. 

 "Initial concentration. 

 *^Final concentration. 

 Decreose in log of molor concontrotion of oxidized 



cytochrome c per minute for 1:150 tissue dilution. 

 ^Decrease in log of molar concentration of reduced 



cytochrome c per minute for 1:100 tissue dilution. 



'A log [cytochrome c]/mg. wet wt./min- 



8-A log [ferricytochrome c]/mg. protein/min. 



^Moles substrate converted/kilo protein/hour (For 

 axoplasm, protein = total protein; for sheath, 

 protein of non*collogenous component). 



^A log [ferricytochrome cl/mg. protein/min. 



JA log [CyF. + +]/min. 



•^Activity/mg. N 

 A log (CyF ' 



lAct 



y/m 



hen standard activity = 

 *) final tissue dilution 



- " TBS 



fy/mg. protein when activity = 

 Alog [cytochrome c] 



At (min.) 



f"mM moles cytochrome c reduced (mg. N)^' mtn. 



"mAi moles DPNH oxidized (mg. N) > min._| 



°mM moles cytochrome c oxidized (mg.N) 'mtn. 



^Moles cytochrome c reduced/mg. ttssue/5 min. • 

 lO'^C. (extinction coefficient of reduced cyto- 

 chrome c taken as 2.8 x 10 ' cm.VmoI-). 



'^O. D. of clear supernatant when measured at 520 m^ 



'A 0. D./mg. protein/min. 



"Moles DPN reduced/g. wet wt./hr. 



'Additional respiratory data on invertebrate tissues 



present in originol paper and not included in 



Section 2. 



