66 THE AQUARIUM. 
to and fro with the motion of the water as gracefully 
as the trees wave before the winds. 
In the illustration on page 59, the tall and graceful 
form of the Calla will be recognized rearing its beau- 
tiful flowers far above the surface of the water, while 
below will be seen the forms of some of the most 
interesting aquatics. 
The foliage of the Myriophyllum presents a fine 
appearance when seen floating in the water, the very 
minute divisions of which have given it the name of 
Milfoil, or thousand leaves. 
The Water Buttercup is also a very interesting 
plant, on account of its peculiar growth; the leaves 
which appear below the surface of the water are so 
deeply cut, as apparently to consist of nothing but 
veins or fibres, while those which are developed above 
are broad and flat, the veins being connected by the 
ordinary tissue. The Starwort also presents the same 
formation; the foliage below is long and slender, 
while it spreads out upon the surface in beautiful 
whorls, somewhat like a star. Here we see peculiari- 
ties adapted to two different elements, existing in the 
same plant. 
The number of plants which may be grown suc- 
cessfully in an Aquarium, is great; but for ordinary 
purposes, three or four well-selected varieties are suf- 
ficient. In all cases a specimen of Valisneria Spi- 
ralis should be obtained, if possible, as its grass-like 
appearance is particularly appropriate, and it is an 
excellent generator of oxygen. 
ae Soe at ee | 
