Pholo: J. J. Ward. 



EGGS OF THE BROAD-BORDERED UNDERWING MOTH, 



CROWDED TOGETHER ON THE UNDERSIDE OF THE 



LEAF 



There are about 1,300 eggs, all deposited in one evening. In 

 another photograph a few of the eggs are shown much enlarged. 



Pholo: J. J. Ward. 



EGGS OF THE BROAD-BORDERED UNDERWING MOTH 



Each egg has a shell of the substance called chitin, which covers 

 the living skin of all insects. The egg-shell is secreted in the ovi- 

 duct of the female insect. Its outer surface is very beautifully 

 sculptured, but the significance of the pattern is unknown. It looks 

 as if the beauty of many organic structures is like that of snow 

 crystals an expression of the way in which the dance of molecules 

 sinks into relative rest. 



