7 o 



SCIENCE PROGRESS 



to be a very conspicuous arrangement : from the point of view 

 of colour vision also, this results in great conspicuousness, as will 

 be shown later. 



Brown occupying moderate or small areas forms marginal 



170 



i 180 



100 



BO 



30 



10 



B 



O Y W Bl 



Diagram No. 5. 



Br 



SD 



and other patterns which render the insects inconspicuou* 

 against their surroundings : these will be referred to when 

 dealing with the other colours, as they may be considered to 

 form a groundwork upon which the other colours are laid. 



