XIV CONTEXTS. 



The Offspring does not invariably resemble the Parents . . 258 

 Nor always in the mixed Breeds^ present the middle 



Tint — 



Native Varieties of Colour in Animals 259 



Tliese are transmitted by Generation 260 



Colour therefore depends on Breed, not on External Causes 261 



Spotted Individuals — 



Variations in Texture and Odour of the Skin 262 



Chapter III. — On the Hair, Beard, and Colour of the Iris. 



Varieties in the Structure and Appearance of the Hair 264 



Its Organization and Growth 265 



Hair of the Albino, and of other White Men — 



Dark-coloured Races — 



Four principal Varieties in the Hair 266 



Distinctions between Hair and Wool 267 



Differences of Hair in Animals 268 



The Beard ; its Varieties 269 



Inconsiderable in the Mongolian Tribes 270 



Also in the Americans 271 



Extirpation practised by both — 



Beard of the Negroes and South- Sea Islanders 276 



Colour of the Iris 277 



Chapter IV .—Differences of Features. —Forms of the Skull.— 

 Teeth. — Attempted Explanations. 



Five Varieties of National Features 279 



Intermediate Gradations 281 



Numerous Modifications in each Variety 282 



in the Africans — 



in the Americans 283 



South Sea Islanders 284 



Form of the Skull 



Daubenton's Observations, and Camper's 285 



Blumex>jbach's valuable Collections and Figures 287 



Norma Verticalis 



Form of the Skull in the Caucasian Variety of Man 288 



Georgian Head, as an Example 289 



Nations having a similar Organization 290 



Controversy respecting the Ancient Egyptians — 



