Chapter 21

[2] For a description of the methods used in measuring the acuteness of these senses, see Part III.

[3] As in the case of the Sicilian brigand Salomone (see Fig. 19).

Transcriber's Notes:

Passages in italics are indicated by _underscore_.

Passages in bold are indicated by +bold+.

Illustration captions are indicated by =caption=.

Additional spacing after some of the quotes is intentional to indicate both the end of a quotation and the beginning of a new paragraph as presented in the original text.

The original text includes Greek characters. These characters have been removed from this text version because the original text provides a translation.

The following misprints were corrected: "possesssed" corrected to "possessed" (page xiv) "Ethnolgy" corrected to "Ethnology" (page 129) "pecuilar" corrected to "peculiar" (page 135) "associaton" corrected to "association" (page 187) "segregrated" corrected to "segregated" (page 206) "distinguising" corrected to "distinguishing" (page 228) "chlidren" corrected to "children" (page 321) "his" corrected to "has" (advertisements)