12 WATER-LILIES 



and water-lilies in pink, yellow and white. 

 This tank was built of a single course of brick 

 carefully laid in cement. The place was 

 excavated to a depth of sixteen inches, and 

 the bottom and walls were covered with a 

 coat of the best Portland cement. Its 

 dimensions were four and a half by six and a 

 half feet. It had a partition near one end 

 coming up nearly to the water level. The 

 larger part contained rich earth to a depth of 

 about six inches for water-lilies and lotus, the 

 smaller was filled with earth and served for bog 

 plants. This, however, is not recommended. 



The safest construction, however, is that 

 recommended by Mr. Tricker as follows: 

 " Dig down two feet six inches and lay a wall 

 of brick eight inches thick below, tapering (if 

 desired) to four inches at the top. The 

 bottom is packed with broken stone, and this 

 and the walls are heavilv coated with the best 

 cement." 



In winter the margins should be protected 

 with litter or leaves. Indeed, it is a good 

 thing to draw off all the water and pack the 



