"Vallisneria" Quotes from Famous Books
 ... stones, so as to retain the plant in its position.... The materials being thus arranged, all appeared to go on well for a short time, until circumstances occurred which indicated that another and very material agent was required to perfect the adjustment.' The decaying leaves of the vallisneria produced a slime which began to affect the fish injuriously: this it was necessary to get quit of. Mr Warington introduced five or six snails (Limnea stagnalis), 'which soon removed the nuisance, ...
— Chambers's Edinburgh Journal, No. 445 - Volume 18, New Series, July 10, 1852 • Various |
