Image ID: SIL-SIL28-19-02
Cite this: Osburn, Raymond Carroll. 1914. The care of home aquaria, New York : The New York Zoological Society.
Supplied Caption: Illustrating the theory, propagated by Innes at the time, that an aquarium could sustain itself if fish, water, etc. had the correct balance.
Original Caption: p.14 Balanced aquaria