xii CONTENTS 



PAGE 



homing horse Sense of direction in man A gaucho's 

 testimony Sudden recovery of the sense of direction 

 Comments ........ 135 



X 



Migration unrelated to a sense of direction Personal 

 observations The old simple account of the pheno- 

 menon Migration a mystery still Newton and 

 Addison: the supernatural theory Dr. Henry More 

 Erasmus Darwin and his tradition theory Wallace 

 and others Canon Tristram's theory of the origin of 

 life in the Arctic regions Glacial epochs and Seebohm 

 in search of evidence Benjamin Kidd and the simple 

 sun theory Aspects of migration in England We are 

 still left wondering Recent futile methods of attacking 

 the problem A new method suggested . ' '. * 157 



XI 



Aspects of migration in southern South America Migrants 

 from the northern hemisphere The abundance of 

 bird life Golden plover Eskimo curlew Buff- 

 breasted sandpiper Glossy ibis Cow-bird Military 

 starling Upland plover The beautiful has vanished 

 and returns not . . . . . . . 171 



XII 



The migrants' cry Unrest previous to departure Upland 

 plover, swallows and others Demonstrative and un- 

 demonstrative species Parental solicitude Swifts and 

 house-martins Strange case of a captive cuckoo 

 Night migration of diurnal species Woodland migrants 

 on the pampas Reluctant migrants Thistledown as 



