8 FRUIT CULTURE UNDER GLASS. 



appUcable in the case of forcing the other fruits treated 

 of in this volume. The pipes should also be so arranged 

 that, by means of stop-cocks, the bottom-heat can be shut 

 off, and applied aud regulated according to the amount 

 recommended for the different stages of the growth of 

 the pine. 



In aU pine-stoves where there is not a supply of soft 

 water from lake or stream, there should be a tank into 

 which to conduct the rain-water from the roof, and pas- 

 sing through the tank a coil of hot- water pipe to warm it. 

 This, in cases where pines are grown extensively, saves 

 a vast amount of trouble in warming water, or in draw- 

 ing it from the heating apparatus, which latter, for sev- 

 eral reasons, is not desirable. 



The arrangement of the plants in the various kinds 

 of pineries is a matter worth referring to. In lean-to 

 houses the tallest plants should always be in the back 

 row, and in span-roofed houses they should be placed in 

 the centre row, so that in each case the plants form a 

 sloping bank of foliage aU fully exposed to the sun. 

 Where the plants are of very equal growth, the centre of 

 the bed in span-roofed houses should be a little higher. 

 As I intend to refer to the management of the leaf- 

 and-tan bed in the cultural directions to be given, I will 

 not here enter on that question. I may just state that, 

 apart from the increased labour and liability to violent 

 heating, I have a warm side for the tan-and-leaf bed for 

 pine-growing. I consider the heat derived from this old- 

 fashioned source second to none other for the production 

 of fine pines. Yet I would never prefer it to hot water, 

 because it entails more labour and much more watchful- 

 ness, which, in these high-pressure days, is a powerful 

 argument in favour of deriving all the heat from hot 



