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[47] This is a note to explain [Greek: hygieina] and [Greek:

euektika], he gives these three uses of the term [Greek:

hygieinon] in the Topics, I. xiii. 10,

{ [Greek: to men hygieias poiaetikon], [Greek: hygieinon legetai]

{ [Greek: to de phylaktikon], { [Greek: to de saemantikon].

Of course the same will apply to [Greek: euektikon].

[48] Healthiness is the formal cause of health. Medicine is the

efficient cause of health.

See Book X. chap. iv. [Greek: hosper oud hae hygieia kai ho

iatros homoios aitia esti tou ugiainein].

[49] [Greek: phronaesis] is here used in a partial sense to

signify the Intellectual, as distinct from the Moral, element of

Practical Wisdom.

[50] This is another case of an observation being thrown in

obiter, not relevant to, but suggested by, the matter in hand.

[51] See Book II. chap. iii. and V. xiii.