DISPERSAL AND PROTECTION XXlil 



of the foods eaten by them. Observation of living 

 birds and the foods they choose is nrged. 



Full of meaning is the study of fruits and 

 their adaptations, and includes many uninter- 

 preted problems, making us feel, with Calder- 

 wood, " that the more we know, the more 

 impressive becomes the unknown." 



