OR, THE HOME-CULTURE OF FRESH-WATER PLANTS. 
lakes, are best. I have recently seen some very 
handsome pieces, brought from Loch Erne, which 
are of a beautifully mottled grey tone, that has a 
charmingly cool and natural effect in an Aquarium. 
If it be intended, in addition to the purely 
aquatic plants, to add a few of those which, with¬ 
out growing in the water, love to linger on its mar¬ 
gin, a plan which I strongly recommend, then a 
portion of the rockwork must be made to ascend 
above the surface, as shown in the circular Aqua¬ 
rium (Plate I.), in which two pieces of the rockery 
are made to project above the water, each contrived 
with cavities sufficiently deep to contain a supply 
of earth for a small group of plants. 
The Aquarium represented in that Plate is one 
of the simplest and cheapest kind, being formed by 
the Inversion of a common bell-glass, which is 
mounted upon a turned wooden stand of the simplest 
design. One of the projecting pieces of rockwork, 
the highest and driest, has been planted with a 
small root of Eern, belonging to the more dwarf 
and delicately foliaged kinds. The other has been 
made to form the receptacle for a fine tuft of Eorget- 
me-not—a plant which never flourishes so luxu¬ 
riantly as when its roots find their way into 
water. Its flowers, in such a position, attain nearly 
21 
