VCE FOR PARTICULAR COLOURS. 305 



. Middlesex and spreading the observations over 

 some time, so as to experiment with different bees, 

 and under varied circumstances. Adding the numbers 

 together, it of course follows that the greater the 

 preference shown for each colour the lower will be the 

 number standing against it. 



The following table gives the first day's observa- 

 tions in extenso : 



In the next series of experiments the bees had 

 been trained for three weeks to come to a particular 

 spot on a large lawn, by placing from time to time 

 honey on a piece of plain glass. This naturally gave 

 the plain glass an advantage ; nevertheless, as will be 

 seen, the blue still retained its pre-eminence. It seems 

 hardly necessary to give the observations in detail. 

 The following table shows the general result : 



