CONTENTS 



PAGE 



PREFACE v 



CHAPl'ER I 



GENERAL CONSIDERATIONS 



Internal secretions and the organs which furnish them .... 1 



The nature of the active principles of the internal secretions .... 4 



Groupings of the chief endocrine glands ...... 7 



Methods of determining the functions of the endocrine organs ... 8 



CHAPTER II 



THE THYROID AND PARATHYROIDS 



Structure and development of the thyroid . . . . . .12 



Structure and development of the parathyroids . . .16 



CHAPTER III 

 THE THYROID AND PARATHYROIDS {continued) 



Effects of removal uf the parathyroids ....... 22 



Effects of parathyroid extract ........ 26 



The mode of action and the nature of the parathyroid autacoid . . .27 



CHAPTER IV 



THE THYROID AND PARATHYROIDS {continued) 



Effects of removal aud of atrophic degeneration of the thyroid : hypothyroidism . 29 



CHAPTER V 

 THE THYROID AND PARATHYROIDS {continued) 



Effects of increase of thyroid secretion : hyperthyroidism . . . .35 



Clinical evidence relating to hyperthyroidism ...... 36 



CHAPTER VI 



THE THYROID AND PARATHYROIDS {continued) 



The nature of the autacoid substances produced by the thyroid . .40 



Interaction of the thyroid with other organs ...... 41 



Influence of the nervous system on thyroid secretion . . . . .44 



