254 



SIGHT LITTLE USED 



successive journeys from the nest to the base of the 

 pencil. I then moved the pencil 6 inches to D, and 

 the two following routes are marked 5 and 6. In one 

 of them, 5 (thick white line), the ant found a stray 



Fig. H. 



Routes followed in experiment No. 3, as described in text. 



The line at the six arrows represents a paper bridge going to nest. 

 C, china cup on top of pencil. D, pencil moved. E, place where 

 a stray larva was found. 1, 2, 3, 4, dotted lines show the nearly 

 direct journeys. 5, thick white line (crossing c in black) of route 

 returning to nest, the ant having picked up a stray larva at E. 6, 

 very circuitous thin white line of track from nest to pencil D. 



