ADAPTATION 



Whether we amputate eyes and legs to see 

 them regenerate, determine the chromosomic dif- 

 ferences between related species, centrifuge eggs, 

 or invent new plants, potato beetles, guinea-pigs, 

 or poultry, match butterflies, count scales, or 

 measure fossils, we are all at work on the prob- 

 lem of problems, " The origin of adaptations." 



Experiment is the watchword of the day; but 

 while we are experimenting in our back yards we 

 should not lose sight of the beauty and the impor- 

 tance of the experiments in landscape gardening 

 and zoological gardening, that are and have been 

 going on in our front yards that extend from 

 here to Cape Horn. 



