PREFACE 



This work was originally planned in two parts, but 

 only six chapters and one section of Chapter VII which 

 was to conclude Part I, were written at the time of the 

 author's death, Monday, April 22, 1907. 



The one section of Chapter VII has been omitted 

 from the book because it was not left in the form in 

 which it would have been published. The title of the 

 chapter is "Potential Harmony of Melody. Expan- 

 sion of Tonality. Chromatic Harmony. Modulation." 



Asterisks in the manuscript have been preserved in 

 the text ; they indicate where footnotes were to have 

 been supplied. 



Dates in the manuscript show that Chapter III was 

 finished during September, 1904, and Chapter IV 

 April 9, 1905. 



These six chapters unrevised are published as they 

 were left, with one exception. To make space for the 

 examples on page 238 a sentence has been omitted. It 

 reads, "Thus the full thorough-bass index of the above 

 terce-form would be ^ of which 6 is the abbreviation." 



The Bird-songs published as an appendix were 

 probably not intended to form a part of the book, but 

 I wish to preserve them and they may be of interest. 

 Twenty-five, Nos. 62-86, are entitled "Birds of Idle- 

 wild 1903," however with the exception of a few from 

 Silver Lake near Oconomowoc most of these songs 

 were heard and recorded during several summers 

 at Idlewild near Sturgeon Bay, Wisconsin. In the 



