i68 



NATURE-STUDY 



(goldfishes especially) and other animals are chilled and 

 often killed in consequence of pouring on them water 

 taken directly from the pump or the city mains at a much 

 lower temperature. Let the new water stand a few hours in 

 the room before making the change, or add warm water 



to it till to the hand 

 the two waters are 

 about the same tem- 

 perature. A siphor 

 is useful sometimes 

 in drawing off ths 

 water, so as not tc 

 disturb the bottorr 

 and to prevent the 

 animals from goin^ 

 out. 



The following ani- 

 mals are good foi 

 stocking aquaria 

 Goldfishes (verj 

 hardy), small bull 

 heads, young dog 

 fish, carp, perch 

 small sunfish, min 

 nows and darters, sticklebacks, salamanders, turtles, frogs 

 tadpoles, crayfish, clams, snails, leeches, dragonfly larv-ae 

 electric-light bugs, water-beetles, water-boatmen, water 

 striders, water-spiders, mosquito wrigglers, and other aquatii 

 insects. 



One thing must be kept in mind, however, and that is tha 

 the carnivorous creatures are apt to eat the other smaUe 



Fig. 36. Aquarium with Sunfish. 



