CONTENTS. XIU 



Breeding considered as a Criterion of Species 227 



Not applicable to Domestic Animals 229 



Illustration of the Subject from Analogy 230 



Chapter II.— Ow the Colour of the Human Species. — Structure 

 of the Parts in which the Colour resides. — Enumeration of 

 the various Tints. — Colour and Denominations of the Mixed 

 Breeds. — Various Colours of Animals. — Productions of Va- 

 rieties.— Spotted Individuals.— Other Properties of the Skin. 



The Skin ^^^ 



Cutis 234 



Its Colour nearly uniform in all Races 235 



Cuticle ^^^ 



Rete Mucosum, the Seat of Colour — 



Difficult and hardly possible to demonstrate this Part in 



the White Races — 



Varieties of Colour in Man, and their Causes 238 



1. White 240 



Colour of the Albinos 241 



General Description of them 242 



Their Peculiarities are not to be considered as a Disease 245 



Examples in various Races and Countries — 



White Skin with a Rosy Tint, light Eyes, and fair Hair 248 

 White Skin with Tendency to Brown — 



2. Yellow or Olive 



3. Red or Copper Colour • 249 



4. Brown or Tawny 



5. Black — 



Intermediate Tints 



Various Colours of Domestic Animals 250 



Colours of mixed Breeds ; no true Hybrids in the Human 



Species 251 



In Cases of Mixed Breed, the Children have the Middle 



Tint 252 



Mulattoes 3 Creoles 



Tercerons, Quarterons, Quinterons 253 



Mestizos 255 



Sambos 256 



Proportions of White and Black Blood in the successive 



Generations 257 



