14 THE FBE8B-WATEB AQUARIUM. 



the eggs until they arc hatched and the young conic 

 forth, and then he guards and watches over them with 

 ail of a parent's lore. Then the curious caddiee-worms, 

 as they are called, without the glass sides of an Aquarium 

 we would not be able to sec them build their grottoes 

 and cases, and go through their metamorphosis until they 

 become the perfect insect — the case-fly. They are funny 

 little fellows, these cads ; I have some that have cases 

 built by laying three sticks across each other so as to 

 form a triangle ; upon this another triangle of sticks is 

 placed, but a little shifted, the next a little more so, and 

 so on, until we have a case with a rough and pointed 

 exterior, covered with projecting sticks of all colore, but of 

 a beautiful and comfortable smoothness inside.- And I 

 have others that have five- sided cases formed of three or 

 four tubes, fastened end to end, which are made of pieces 

 of leaves cemented together with a water-proof cement that 

 would be invaluable to the manufacturer of Aquaria. And 

 these cads are gentlemen of taste, too, for instead of form- 

 ing their cases of leaves of one sombre brown hue, they will 

 make one-third of its length of dark-colored leaves, the 

 next of light-colored, and the last of green. One of these 

 wonderful little creatures, who happens to dwell in a run- 

 ning stream, finding that his case, if made of wood, 

 wo*oId be too light, and be carried away by the force of 

 the water, attaches to some part of it a small stone, of 

 such a weight that he may readily drag it about with 

 him, but still heavy enough to resist the force of the 

 stream ; or he will make his case of empty snail-shells, 

 or entirely of stones, sometimes attaching a piece of wood 



