FOOTNOTES:
[135] See Avenarius' formulæ of "complete vital maintenance": f(R) = -f(S); f(R) + f(S) = o, "Kritik der reinen Erfahrung."
[136] "Problems of Life and Mind," Ser. II. p. 103.
[137] See essay by Petzoldt above considered.
[138] "Biologische Probleme," p. 96; "erfordern."
[139] "Methods of Ethics," 4th ed. p. 97.
[140] "Biologische Probleme," p. 177 et seq.