302 



SHARP EYES 



the illustration), the crystal palace of the most exquisite 

 and gifted artist among all the caddis fraternity. The 

 tube is composed of minute, glassy, flat pebbles, joined 



V 



edge to edge with the most skilful exactness, and is- 

 often so transparent that when wet the form of the 

 dweller may be seen through its wall. Here may the 

 human worker in stained-glass find his matchless model. 

 An artist, too, that accomplishes his task without resort 

 to metal frame or solder, the edges of his glass being 

 joined by some insoluble cement of which he holds the 

 secret. 



The art of the bag-worm appears almost commonplace. 



