^Estimated or colculotod from available data. 

 "Initial concentrotion. 

 '^Frnal concentration. 

 Docreos© in log of molar concentration of oxidized 

 cytochrome c per minute for 1:150 tissue dilution. 

 ^Decreose in log of molar concentrotion of reduced 

 cytochrome c per minute for 1:100 tissue dilution. 



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



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

 Moles substrate converted/kilo protein/hour (For 

 oxoplasm, protein - total protein; for sheath, 

 protein of non-coltogenous component). 



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



iA log [CyFe**l/min. 



Activity/mg. N when standard activity = 

 A log (CyFe**) final tissue dilution 



;tivity 



Wog [( 



/mg. protein 



Act 

 Alog [cytochrome c] 



At (min.) 



when activity = 



"^mW moles cytochrome c reduced (mg. N) ^ min. ^ 

 "m^i moles DPNH oxidized (mg. N)~^ min.~* 

 ° mfj. moles cytochrome c oxidized (mg. N)~^ min."' 

 ^Moles cytochrome c roduced/mg. tissue/5 min. a 

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

 chrome c taken os 2.8 X 10"' cm.^/mol.). 



''0. D. of clear supernotont 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 original paper and not included in 



Section 2. 



