A New System for Preventing Collisions at Sea 



THE DIADEM BAT. 



This'is a good example of the Leaf-nose Bat. Not only does it have the leaf 

 attached to its nose, but it has a little sac which secretes a wax-like substance 

 similar* to ear-wax. Its eyes are extremely small, nevertheless it is able to get about 

 in the dark quite as well as a bird would do in daylight. 



HEAD OF THE GREATER HORSESHOE BAT. 



I It will be observed that the sensitive membrane is attached to the nose, and 

 that the ears are not provided with the wing-like leaves. 



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