ROCK POOLS AND PONDS 85 



pond. Should it be impossible to drain away the water 

 by a pipe, it must be removed by buckets or by means 

 of a portable pump. 



Presuming the pond to be quite watertight, we may 

 now fill in the soil, composed of loam, with a little old 

 cow manure added, to a depth of about six inches. 

 Stones should then be cemented to the edge of the shelf, 

 next the water, and rising above the water line. They 

 are to enable one to place soil for the plants to be grown 

 on the margin of the pond. 

 About two inches of rough 

 stones of small size should ^ 

 be placed at the bottom of 

 the shelf, the whole being 

 filled up with loam, leaf-soil 



or npat anrl <;anrl A convenient method of plant- 



Or peat ana Sana. ing Water Lilies is to set 



Planting the Pond. The them in baskets, the latter 



then being sunk. 



plants may then be set in 



the pond and round the margin, and made firm in the 

 soil. If the soil is loose some of the aquatics may be 

 dislodged by the water and float to the surface, so 

 that it is wise to put a few stones over the roots to 

 keep them from rising. If Nymphaeas or other aquatics 

 have to be planted when the water is in, they may be 

 set in a small basket filled with soil and loaded with 

 stones and sunk to the bottom. The roots will pass 

 through the openings and enter the soil in the pond. 

 A frequent error in planting aquatic plants, such as 

 Nymphaeas, is that of putting them so close that 



