/l/ Ranges are averages of ranges of values reported in the literature cited. They may be con- 

 sidered to be equivalent to estimate "d" of the 951^ range (cf. Introduction). /2/ Nitrogen in 

 excreta is present as nitrogen compounds eind not as free nitrogen. /5/ Total N, and NPN values 

 have been calculated from the values listed for the individual nitrogen components, It ems No. 6-11. 

 See also Footnote 1. /I*/ See also table on electrolyte excretion. /5/ Determined by paper chro- 

 matography, identity not completely proven. 



209 



