ARISTOTLE 



in Hamlet (iii. iv.) where the Queen says to Hamlet : 



Your bedded haire, like life in excrements, 

 Start up, and stand an end. 



This theory, as applied to hair, is expounded by 

 Aristotle at 658 b 1 4 following, and modern biochemists 

 have reason for believing that some pigmentation in 

 animals, such as the black melanin of mammalian 

 hair, or the yelloAv xanthopterine of the butterfly's 

 wing, is physiologically a form of excretion. 



" Concoct," " concoction." 



These terms, Λvhich have already appeared in 

 these notes, are used to translate ττίσσΐΐν, -ίψι^. The 

 Greek words are the same as those employed to 

 denote the process of ripening or maturing of fruit, 

 corn, and the like by means of heat — also that of 

 baking and cooking. 



Terms sometimes associated Anth these are μεταβολή 

 and μίταβάλλαν. For example, at 650 a 5 we read 

 that τΓβι/Ί? and μίταβολή take place δια ττ}? τον Θέρμου 

 δυνά/Λ€ω5 ; and at 651 b 26, as the creatures grow 

 and get " matured," the parts μίταβάλλΐΐ their 

 colour, and so do the viscera. 



"Ψυχή, " Soul." 



The English ΛΛΌrd " Soul," as ν,'ύΐ be seen, over- 

 emphasizes, Λvhen compared with φ^'χη, certain 

 aspects of the Greek term, but it is by far the most 

 convenient rendering, and I have used it in pre- 

 ference to " life " or " vital principle." 



It will be useful to have an outline of Aristotle's 

 general doctrine about Soul. 



The different " parts " or " faculties " of Soul can 

 S4. 



