128 



ON THE HABITS OF ANTS. 



[LECT. 



altered the position of the bricks and food to /(Fig. 53), 

 making a difference of 8 inches in the position of the 



a, 



FIG. 53. 



latter. The ant came as before, walked up to the first 

 brick, touched it with her antennae, but then followed her 

 old line to a. From there she veered towards the food, 

 and very soon found it. When she was gone, I altered 

 it again, as shown in Fig. 54 ; she returned after the usual 



\L 



FIG. 54. 



interval, and went again straight to a ; then, after some 

 wanderings, to f, and at length, but only after a lapse 

 of 25 minutes, found the food at g. These experiments 

 were repeated more than once, and always with similar 

 results. I then varied matters by removing the bricks ; 

 this, however, did not seem to make any difference 

 to the ants. 



From the observations of Sprengel, there could of 



