environment—Differences according to sex—Reconstitution from the long bones—Teguments: Skin—Hair of head and body—Four principal types—Microscopic structure—Correlation between the hair of the head and the pilosity of the body—Pigmentation: Colouring of the skin, the eyes, and the hair—Changes in the pigment.

CHAPTER II. 1. MORPHOLOGICAL CHARACTERS (continued) 53 Cranium or Skull: Cranial measurements—Orbits and orbital index—Nasal bone and nasal index—Prognathism—Head of the living subject: Cephalic index—Face—Eyes—Nose and nasal index in the living subject—Lips—Trunk and Limbs: The Skeleton—Pelvis and its indices—Shoulder blade—Thoracic limb—Abdominal limb—Proportions of the body in the living subject—Trunk and neck—Curve of the back—Steatopygy—Various Organs: Genital organs—Brain—Its weight—Convolutions—The neuron—Its importance from the psychical point of view. CHAPTER III. 2. PHYSIOLOGICAL CHARACTERS 105 Functions of nutrition and assimilation: Digestion, alimentation, growth, temperature of the body, etc.—Respiration and circulation: Pulse, composition of the blood, etc.—Special odour—Functions of communication: Expression of the emotions, acuteness of the senses, etc.—Functions of reproduction: Menstruation, menopause, increase in the number of conceptions according to season, etc.—Influence of environment: Acclimatation—Cosmopolitanism of the genus Homo and the races of mankind—Cross-breeding. 3. PSYCHOLOGICAL AND PATHOLOGICAL CHARACTERS.—Difficulties of studying them—Immunities—Nervous diseases of uncivilised peoples. CHAPTER IV. ETHNIC CHARACTERS public@vhost@g@gutenberg@html@files@46848@[email protected]#Page_123" class="pginternal"