GARDEN POOLS 133 



enough to stock a large pond. There is an old 

 theory, doubted by many, that the old fish turn 

 cannibals and devour their progeny. These people 

 advise the putting of roots and stock into a tub, 

 this is so the egg may be attached, removed, and 

 hatched separately. In cases like this the small 

 fish are allowed to grow considerably before being 

 returned to the tub. 



There are two kinds of tubers, the tender and 

 the hardy. The latter require practically no care 

 during the winter months, that is, always provided 

 the water is deep enough to allow no freezing of 

 the crown of the plant. They should be planted 

 about the first of May and both varieties can be 

 given the same treatment, with the exception that 

 the hardy variety do best when planted in soil two 

 feet deep and covered with six inches of water. 



All pools should have planting in addition to 

 the tubers of submerged plants. This is to aerate 

 the water and keep it pure and sweet. The best 

 kinds to be used for this purpose are Anacharis 

 Canadensis Grigantea, and Canbomba Viridifolia, 

 ten of them being enough for a large pool. The 

 former is a giant water weed with dark green ovate 

 leaves and light stems. It is a quick grower and 



