THE FRESH-WATER AQUARIUM. 27 
climb over rockwork. They are all rather coarse and apt 
to shed their lower leaves, but, if well placed, produce a 
striking effect. They blossom freely in the aquarium, and 
that is a great recommendation. 
>> 
“= \" By. ,) 
uh TS NA of ihe 
28k PS f kK 
AQ j Se SAS 
SS er 
: 
MYRIOPHYLLUM SPICATUM. 
Nuphar lutea is the best of the water-lilies for the pur- 
pose: it grows freely and produces graceful outlines below 
and above. It should be planted early in spring to secure 
blossom ; but if it does not throw up blossoms in summer 
it may be removed, and its place supplied by a plant in 
full bloom. Nymphea macrantha and Nodorata minor 
are also highly suitable. 
Ericaulon, or the pipewort, sends its only English 
species—Z. septangulare—to the tank. It is a bog 
plant, rises six inches high, and does not succeed. if im- 
mersed more than three inches; hence it is suitable for 
