. Nature-study; a manual for teachers and students. Nature study. NATURE-STUDY (goldfishes especially) and other animals arc 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 Ijcfore making the change, or add warm water to it till to the hand the two waters are about the same tem- perature. A siphon is useful sometimes in drawing off the water, so as not to disturb the bottom and to prevent the animals from going out. The following ani- mals are good for st
. Nature-study; a manual for teachers and students. Nature study. NATURE-STUDY (goldfishes especially) and other animals arc 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 Ijcfore making the change, or add warm water to it till to the hand the two waters are about the same tem- perature. A siphon is useful sometimes in drawing off the water, so as not to disturb the bottom and to prevent the animals from going out. The following ani- mals are good for stocking aquaria: Goldfishes (very 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 lan-^e, electric-light bugs, water-beetles, water-boatmen, water- striders, water-spiders, mosquito wrigglers, and other aquatic insects. One thing must be kept in mind, however, and that is that the carnivorous creatures are apt to eat the other smaller. Fig. 36. Aquarium with Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Holtz, Frederick Leopold, 1870-. New York, C. Scribner's Sons
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