

NEWT. CADDIS-WORMS. 



171 



insects into the other. Many a fight took place among the 

 sticklebacks and the water-boatmen, in which sometimes the 

 one and sometimes the other came off victorious. 



The boys then got some caddis-worms, pulled them from 

 their cases, and put them into a glass vessel filled with water, 

 and having at the bottom some glass of different colours broken 

 into small pieces. In a short time the caddis-worms had made 

 themselves new, parti-coloured cases of glass, which were quite 

 transparent, and through which the white bodies of the grubs 

 could be plainly seen. Frank put these in among the minnows 



SMOOTH NEWT. 



one day, and it was amusing to see the fish darting at the 

 caddis-worms, thinking they would be soft, succulent morsels, 

 and to watch their evident astonishment at being foiled by the 

 hard cases. This suggested an idea to Frank which he after- 

 wards carried out. 



None of the sticklebacks kept by the boys built nests or bred, 

 so that they missed seeing a very pretty and interesting sight. 

 " Fishes building nests!" I hear some of my readers exclaiming. 

 Yes, sticklebacks do build nests, and in the number for 

 January 1866 of Science Gossip is an interesting account of this 

 habit, which I take the liberty of quoting. When I have 



