vi TABLE OF CONTENTS. 
its Cause, 36. Of Branched Pile, 36. Of the Cortex of Pile, 36. Of the Scales of the Cortex, 37. 
Their Use, 37. Of Ribbons of Cortex, 37. Of the Paved Cortex, 37. Examples of the same, 37. Of 
the Hair of the Stag, 38. Of that of the Elk, 39. That of the Dicranoceros Americanus, 39. That of the 
Sloth, 40. Of the Fibres of Pile, 41. A Crushed Hair, 41. The Use of Fibres, 42. Of the Centre of 
Pile, 42. Of the Pile of the Dog-Faced Monkey, 42. Of the Coloring Matter in the Hair of the Bat, 43. 
An Optical Deception, 43. The Coloring Matter of Pile in general, 44. Of the Follicle of Pile, 46. 
Where the Follicle is found, 46. How it is formed, 47. Of Pile without a Follicle, 48. Examples of 
Follicles of the three Species of Men, 49. The Follicle of the Hair of Hybrids, 49. Of the Vitality of 
Pile, 49. Of Vessels of Pile, 50. Of the Secretion of Pile, 50. 
CHAPTER III.—Of a Perfect Hair, 51. Characteristics of Pile of the Head of Man, 51. Examples of 
three General Forms, 51. Of Particular Forms, 51. To whom these forms belong, 52. Of the Ductility, 
Elasticity and Tenacity of Pile, 53. The Essential Properties of Pile, 53. The Endurance of these 
Properties, 54. Of Contractibility, 55. Table of the Ductility, Elasticity and Tenacity of Pile, 56. Of 
the Trichometer, 57. Modus Operandi, 57. Of the Direction of Pile, 57. The Laws of Direction of 
Pile, 57. The Reasons of the Laws, 57. The Proofs, 58. The Consequences, 58. Of the General 
Inclination of Pile, 58. Of Particular Inclinations, 58. On the Body and Members, 59. Of the Incli- 
nation of the Pile of the Lower Animals, 59. The Classification of Pile of the Human Head, 59. The 
Classification of Mankind by the Pile of their Heads, 59.. The Pile of the present American Indians’ 
Head, 59. The Pile of the Mound and Mummy American Indian, 59. The Peculiarities and Affinities 
of these Piles, 63. Of the Pile of the Chinese, 63. Of the Pile of the Oval-Haired Species, 63. The 
Pile of Egyptian and Thebes Mummies, 64. Of the Pile of the Eccentrically Elliptical Species, 65. Of 
the Bushman Boy, 65. The Description of his Wool, 66. The Wool of Congo Billy, 66. Inferences 
from the foregoing, 66. Of Hybrids, 67. The Division and Nomenclature of Hybrids, 67. Examples of 
the same, 67. Tables of Simple Hybrids, 68. Tables of Compound Hybrids, 70. Of the Covering of 
the Heads of Hybrids, 73. Some Examples of the same of Simple Hybrids, 74; and of the Compound 
Hybrids, 74. Of the Classification of the Lower Animals by their Pile, 76. 
CHAPTER IV.—Of the Color of Pile, 77. Of Black Hair, 77. Of the Original Color of Hair, 77. 
Blackness in Hair no sign of Strength, 78. The Variance between the Color of the Hair and that of the 
Eyes of Man, 78. Brown Hair, 78. Red Hair, 79. Yellow Hair, 79. White Hair, 79. The Pile of 
the Albino, 79. The Examination of the Pile of the White Albino, 80. The same of the Black Albino, 81. 
Of Albinos among the Eccentrically Elliptical Species, 83. Inferences from the foregoing Examinations, 83, 
Change of Color of Pile at the Period of Puberty, 84. Of Monochromatic and Polychromatic Pile, 84. 
Of the Changes of the Color of Pile other than at the Period of Puberty, 85. Of Athipilie, 86. Of Pile 
of Man losing its Color, 86. Several Interesting Cases, 86. An Experiment, 87. The Cause of the 
Sudden Loss of Color of Pile, 88. Of the Gradual Loss of Color in Pile, 88. Of the Cause of this 
Gradual Loss, 88. Of the American Indian turning Grey, 88. Of the Rete Mucosum, 89. How it is 
with the Lower Animals, 90. Whether the Color of Pile is Influenced by External Causes, 90. Of the 
Polarization of Light by Pile, 91. Of Dyeing Pile, 92. 
