viii CONTENTS 



Page 



USES OF THE SKIN - 127 



Skin as a Protective Covering - - 127 



Skin as an Organ of Touch - 127 



Skin as an Organ of Absorption - 128 



Skin as an Organ of Secretion - - 130 



Sebaceous Secretion - - 131 



APPENDAGES OF THE SKIN - - 131 



Hair 131 



Horn 132 



DISEASES OF THE SKIN - 134 

 Classification 1 34 

 General Observations on the Subject of Diagnosis and Treatment 135 

 Diagnosis - 136 

 Erythema - - 136 

 Wheals 136 

 Papules 137 

 Vesicles 137 

 Pustules 1 37 

 Squamae 137 

 Tubercula 137 

 Ulcers - 137 

 Excoriations 137 

 Etiology 1 38 

 Prognosis - 139 

 The Principles of Treatment - 140 

 Eruptions of the Acute Specific Diseases 140 

 Variola Equina or Horse-Pox 140 

 American Horse-pox - 142 

 Eruptions due to the Contact of Irritating Agents, or to the Circula- 

 tion of Specific Poisons in the Blood 142 

 Local Inflammations - 143 

 Erythema - 1 44 

 Purpura 145 

 Urticaria 145 

 Catarrhal Inflammation - 146 

 Eczema 146 

 Plastic Inflammations 148 

 Lichen - 148 

 Prurigo - 149 

 Bullous Inflammation - 149 

 Herpes 1 49 

 Suppurative Inflammations 150 

 Ecthyma - - 150 

 Squamous Inflammations - 152 

 Pityriasis - - 152 

 Psoriasis ... . 152 

 Ichthyosis - - - 153 



