. The shell book . rn-like leaf, andgrows well in the tank. Though not so easily obtained as theParrots Feather, a close relative which florists grow, it is muchmore desirable. The latter exhales very little oxygen, though ithas a dense, showy plume. The Stoneworts, Niiella and Cbara, bear tufts of silky hairsthat sway most gracefully when a tadpole or a fish flips his tailnear by. Water-silk (Spirogyra) is a fine network of green threads,which floats, and is often mistaken for scum. A hand-glassbrings out its beauty. Duckweeds (Lemnd) float like pale threads, their minutegreen leaves flattene
. The shell book . rn-like leaf, andgrows well in the tank. Though not so easily obtained as theParrots Feather, a close relative which florists grow, it is muchmore desirable. The latter exhales very little oxygen, though ithas a dense, showy plume. The Stoneworts, Niiella and Cbara, bear tufts of silky hairsthat sway most gracefully when a tadpole or a fish flips his tailnear by. Water-silk (Spirogyra) is a fine network of green threads,which floats, and is often mistaken for scum. A hand-glassbrings out its beauty. Duckweeds (Lemnd) float like pale threads, their minutegreen leaves flattened on the surface of the water. Many tinysnails and other creatures harbour and forage on them. Riccia, which looks like a sprinkling of green sawdust, is agood plant. Conferva is the botanical name of several kinds of alga?,microscopic plants, which appear as a green film lining yourtank, especially if it is in a well-lighted place. Fairy ropes of itfestoon the walls and connect the plumes of the plants. This is 12. 1 Fresh-water aquarium, with pond snails and pondweeds. 2 Marine aquarium, with hard-shelled clams and sheets of green sea water in these tanks is kept pure by the plants.
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Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidshellbook00r, bookyear1908
