viii PREFACE 



physiology and to practical gynaecology 1 , that the 

 investigations and communications referred to — welded 

 together, amplified and largely rewritten — are submitted 

 for consideration in book form, in the hope that further 

 interest may be stimulated, fresh facts noted and 

 recorded, and existing opinions corrected or confirmed. 



1 In this work the author is chiefly concerned with the female 

 characteristics and functions; nevertheless, the internal secretions 

 are as closely connected with the genital functions of the opposite sex, 

 in relation to which they must, therefore, occasionally be discussed for 

 the sake of contrast or comparison. 



January, 1916. 



