vi PREFACE 



manuscript Nos. 1-9 and 43-86 were written on the 

 staff, but Nos. 10-39 were indicated only by sylla- 

 bles and 40-42 by letters, in consequence of which 

 the pitch of these songs is not quite certain. 



To Miss Luise Haessler I wish to acknowledge my 

 thanks for the help she has given me in copying most 

 of the examples, all of the bird-songs and in supplying 

 a paragraph of explanation page 254 and three ex- 

 amples pages 230-252. 



L. E. K. 



WiLLiAMSTOWN, MASSACHUSETTS, June, 1909. 



