WOODLAND PATHS 



them Thanaos brizo, the sleepy dusky- 

 wing, defied any but the most alert eye to 

 follow them as they dashed from invisi- 

 bility on some dark fallen limb to vanish- 

 ment on brown mud of the path. They 

 seemed to skip in and out of existence at 

 will. I call them brown, for you will see 

 that they are that if you have a chance to 

 see one sitting at rest. You may get near 

 enough to see the beautiful blueish spots 

 surrounded with dark rings on the fore 

 wings, and the double row of yellow spots 

 on the hind wings. For all that Thanaos 

 brizo is as black as your hat to the eye 

 when he is in flight. Perhaps that is why 

 he vanishes so readily. You are looking 

 for a black butterfly, and what you see is 

 nothing but a brown bit of bark or leaf. 



Darwin was convinced that the earth- 

 worm, as he called him, was of inestimable 



value to man, and he cites how he works 

 224 



