WATER — APPROACH. 19 



compartments, are liiglilj useful in preventing radia- 

 tion during clear nights, which always produces great 

 additional cold. 



A supply of ivater is equally necessary. Where a 

 streamlet can be made to flow through the garden, and 

 keep a central pool constantly full, it will conduce both 

 to utility and amenity. In many places, such a stream- 

 let cannot be commanded ; but water may be conducted 

 in pipes from springs or sources higher than the general 

 level of the garden, and collected in a tank in the upper 

 part of the inclosure. Supposing the garden to have 

 a slopfe to the south, water might not only be supplied 

 from such tank for ordinary garden purposes, but might 

 be made to irrigate different quarters in succession. The 

 late Mr. Knight, of Downton, was in the practice of irri- 

 gating w^ith great advantage his strawberry beds while 

 in flower, the rows of celery and of broccoli, and of other 

 crops transplanted during summer; and particularly the 

 late crops of peas, the irrigation of which tended to pre- 

 vent mildew, and to insure the production of healthy 

 green peas during the" month of October. A pipe of 

 suflicient calibre should be led from the pool or tank to 

 the hot-houses, and to two or three different stations in 

 the garden. Well or spring water should be exposed in 

 reservoirs to the action of the sun and air, w^hen it be- 

 comes comparatively soft and salubrious for plants. As 

 rain-water is found better than any other for this pur- 

 pose, all that can be collected should be stored in cis- 

 terns and kept for use. 



Connected with the situation is the approach to the 

 garden from without, ia matter requiring -some taste and 

 contrivance. If possible, it should be from the south, 

 when the range of glazed houses, always fronting to- 



