BIRDS AND BUTTERFLIES 245 



The only way to destroy the pernicious zoological 

 theories that hold the field at present is to pile up the 

 facts that tell against them. Similarly, theories that 

 are true cannot be established satisfactorily except 

 by the accumulation of facts. The relations between 

 birds and butterflies can be determined only by ob- 

 servation, and for that kind of observation no country 

 presents a better field than India. Moreover, such 

 observations can be conducted by people having little 

 or no scientific knowledge. 



