102 ANTENNA OF MELOLONTHA 



insects build, and the mathematical accuracy 

 of their work, their sense of touch must be 

 extremely delicate. This sense is generally 

 believed to be specially localised in the 

 antennae. 



The varied movements of the lamellae of 

 the antennae of the cockchafer may be realised 

 by the opening and folding over of the several 

 divisions of a carved ivory fan. 



The original photograph of this antenna 

 (Fig. 29) shows an amplification of 36 dia- 

 meters. The time of exposure was 4 minutes 

 to gas-light ; the focal distance from plate 

 object was 72 inches. A 2-inch objective 

 was used. 



