. Water-lilies and how to grow them, with chapters on the proper making of ponds and the use of accessory plants. otony. Thefirst lily opened fifty-eight days after settingout the plants, and from that time the plantswere in almost continual bloom until late inthe autumn, as many as twelve blossomsbeing open at one time. The mould used in forming the tank wasmade of waste lumber and consisted of fourparts: a lower bottom-forming frame, a coreor inside box, an outside casing or box, and acoping-forming frame. The hole having beendug slightly larger than the finished basinwas to be, the bottom f
. Water-lilies and how to grow them, with chapters on the proper making of ponds and the use of accessory plants. otony. Thefirst lily opened fifty-eight days after settingout the plants, and from that time the plantswere in almost continual bloom until late inthe autumn, as many as twelve blossomsbeing open at one time. The mould used in forming the tank wasmade of waste lumber and consisted of fourparts: a lower bottom-forming frame, a coreor inside box, an outside casing or box, and acoping-forming frame. The hole having beendug slightly larger than the finished basinwas to be, the bottom frame (A) was firstplaced therein. This frame, formed of old2x4 scantlings arranged on edge, had insidedimensions equal to the outside dimensionsof the bottom of the tank, and after havingbeen placed in position, it was filled level withconcrete, thoroughly tamped or packed. ECONOMICAL POND CONSTRUCTION 29 forming the tank bottom. The side-wallswere then moulded by means of the outertapered box (B) and an inner correspondinglyshaped box (C), the two boxes being con-structed of rough boards joined respectively. Here is a section of the concrete tank showing method of construction.(References in text.) on their outer and inner sides by uprightcleats (D). These boxes had their wallsspaced apart a distance equal to the thick-ness of the walls to be formed, and wereplaced in position as soon as the bottom framehad been filled. They were fastened to- 30 WATER-LILIES gether at the top and properly braced by strips(E) to prevent their springing under pressure,after which the space between them wasfilled with concrete, thoroughly packed. Assoon as the material had sufficiently set, theinner box or core (C), and the top board ofthe outer box or casing, were removed, leavingthe side-walls. The space outside the wallswas then filled in and the coping frame wasplaced in position level with the tops of thewalls. A lining of sand and cement was appliedto the inner faces of the bottom and side-
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