^Estimated or colculated from available dato. 



Initial concentration. 

 ^Finol concentration' 

 Decfoose in log of molar concentration of oxidized 

 cytochrome c per minute for 1:150 tissue dilution. 

 ^Decrease in log of molar concentrotion of reduced 

 cytochrome c per minute for 1:100 tissue dilution. 



*Alog [cytochrome c]/mg. wet wt./min. 



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



"Moles substrate converted/kilo protein/hour (For 

 axoplosm, protein = total protein; for sheath, 

 protein of non-col logenous component). 



*A log [ferricytochrome cl/mg. protoin/min. 



JA log\CyFe**l/min. 



^Activity/mg. N when standard activity = 

 A log (CyFe**) final tissue dilution 



s^ " n!o ■ 



' Activity/mg. protein when activity = 

 Alog [cytochrome c] 



At (min.) 



'"m^ moles cytochrome c reduced {mg. N) ' min. ' 

 "my moles DPNH oxidized (mg.N)~'min.^ 

 ° my moles cytochrome c oxidized (mg. N) 'min. 

 ''Moles cytochrome c reduced/mg. tissue/5 min. at 

 10°C. (extinction coefficient of reduced cyto- 

 chrome c fatten as 2.8x 10"' cm.^/mol.). 



'^0. D. of cleor supernotant when measured ot 520 mtt 



•"AO. D./mg. protein/min. 



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



'Additional respiratory data on invertebrate tissues 



present in original paper and not included in 



Section 2. 



