l6 WATER-LILIES 



Floating parts of plants have very remark- 

 able powers of accommodation to the depth 

 of the water. Water-Hly leaves may be en- 

 tirely submerged in the evening, and by next 

 morning their stalks will have grown just 

 enough to spread them on the surface again. 

 But on all considerations, it is desirable that 

 the water level should not vary more than 

 four inches at the most; even this amount 

 may bring into view ugly strips of mud or 

 masonry. An outlet of ample size is as neces- 

 sary as an inlet for the regulation of the water 

 supply. Small ponds on level or gently slop- 

 ing ground may be allowed to overflow their 

 sodded margins. If fed by a continuous 

 open stream, it may be most artistically led 

 away in a similar manner, either directly, or 

 by a waterfall, or through a bog garden. 



THE BOG GARDEN 



The bog garden consists merely of very 

 wet ground in which a host of interesting 

 plants flourish. It must, of course, be beside 



