. Zoological Society bulletin . COMMON SALT-WATER live well in the small aquarium. 844 ZOOLOGICAL SOCIETY miniature fishes are found both in fresh and are especially interesting. tity of animal life during the day and in brightweather than it will at night or on dark animal life of the standing aquarium musttherefore be regulated to meet the poorest ratherthan the best conditions of oxygen productionby the plant life. Temperature also affects the rate of starchmaking and consequently of oxygen elimination,as the protoplasm of
. Zoological Society bulletin . COMMON SALT-WATER live well in the small aquarium. 844 ZOOLOGICAL SOCIETY miniature fishes are found both in fresh and are especially interesting. tity of animal life during the day and in brightweather than it will at night or on dark animal life of the standing aquarium musttherefore be regulated to meet the poorest ratherthan the best conditions of oxygen productionby the plant life. Temperature also affects the rate of starchmaking and consequently of oxygen elimination,as the protoplasm of the plant is more activein a higher than in a lower temperature. How-ever, the fishes are also less active in colderwater and consume less oxygen, so that thesefactors balance each other and temperature doesnot especially affect t h eaeration of the aquarium. THE AQUARIUM TANK. Undoubtedly the best kindof a receptacle for the be-ginner is the oblong,straight-sided aquarium withmetal frame, glass sides andslate bottom. The mediumsize, holding six or eightgallons, will be the best forthe beginner. The smallersizes are diffi
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