Colour Analysis
Unexposed Part—Armpit
| Substance examined. | Matching Standards. | Colour developed. | ||||
|---|---|---|---|---|---|---|
| Red. | Yellow. | Blue. | Black. | Orange. | Red. | |
| Witoto | 3.6 | 2.8 | 1.6 | 1.6 | .2 | .8 |
| Muenane | ||||||
| Karahone | ||||||
| Andoke | ||||||
| Nonuya | ||||||
| Boro | 3.3 | 2.7 | 1.5 | 1.5 | .2 | .6 |
| Okaina | ||||||
| Resigero | ||||||
| Menimehe | ||||||
Mean average attempted by means of colour markings and identified according to Lovibond’s tintometer scale.
There was practically no tribal differentiation of pigmentation in the units of these groups, as far as the unexposed part of the body is concerned. This is understandable. The palm of the nigger’s hand differs little from his white brother’s.
Colour Analysis
Exposed Part—Back
| Substance examined. | Matching Standards. | Colour developed. | ||||
|---|---|---|---|---|---|---|
| Red. | Yellow. | Blue. | Black. | Orange. | Red. | |
| 9. Witoto | 10.6 | 9.2 | 6.2 | 6.2 | 3.0 | 1.4 |
| 8. Muenane | ||||||
| 7. Karahone | 8.7 | 7.5 | 4.5 | 4.5 | 3.0 | 1.2 |
| 6. Andoke | ||||||
| 5. Nonuya | 8.0 | 7.0 | 4.0 | 4.0 | 3.0 | 1.0 |
| 4. Boro | 4.9 | 4.4 | 1.5 | 1.5 | 2.9 | |
| 3. Okaina | .5 | |||||
| 2. Resigero | Yellow. | |||||
| 1. Menimehe | 3.4 | 4.1 | .7 | .7 | 2.7 | .7[437] |
There is here more differentiation. The tribes numbered 1-9 are in order of shade, from the lightest according to personal observation. This is borne out by data except the grouping which was not so apparent to the eye.
Apparently in one tribe only is red non-existent, free yellow taking the place—No. 1 (vide curve).
Colour Curves of Skin Pigmentation (Indians of the Middle Issa and Japura Valleys)