GLl^ANINGS ON IIORTICULTURF.. 



47 



from the heat of the sun. Keep the temperature of the roots, 

 externally, by means of hot stable-manure, and the interior of 

 the orchard-house, at fifty-five degrees. On a bright day, air 

 must be admitted and the lights be shaded: when the peaches 

 or apricots have attained the size of a nut, more air will be need- 

 ful; the shoots must not be allowed to come in contact with the 

 glass. At the period of stoning, much air must be allowed, and 

 still more when the fruit is ripening. Canvass covering will now 

 be required to prevent the sun's rays from falling perpendicularly 

 on trees, and injuring the fruit during the succeeding eight 

 days. 



When the roots are denuded of their covering, a plentiful 

 supply of liquid manure should be given daily, and the fruit will 

 be of a finer flavour than that grown on the wall-trees. The 

 latter will retain their health and vigour longer if they are well 

 syringed at least twice during each day. 



Warner's conservatory boiler and pipes. 



I have introduced a Warner's conservatory boiler, with four- 

 inch hot-water pipes, in order that the trees may enjoy a tempe- 

 rature of sixty degrees, until the fruit is set and stoned, after 

 which I increase it to sixty-five degrees, by which method the fruit 

 will ripen well. The sun-heat may be allowed to raise the ther- 

 mometer ten degrees above this temperature, especially after the 

 stoning, before it is thought necessary, on account of the steam in 

 the house from syringing the pipes, to admit air. The fruit 

 begins to ripen, from the introduction of artificial heat, about 

 June, and the crop continues to be productive till September, 

 when the fruit on the wall-trees is ready in succession. Warner's 

 conservatory boiler (price 7/.) is placed at the further end of the 

 orchard-house, and the chimney-pipe is carried up in the inside, 

 in order that it may give out more heat. 



A tank for water is placed at the opposite end of the orchard- 

 bouse, from which, the flow and return pipes and the boiler are 

 supplied, and a safety-valve proceeds from it. The small copper 

 boiler forms the exterior part of the stove ; the water, when 

 attaining boiling heat, is forced through the flow-pipe, which, 

 together with the return-pipe, run just beneath the planks which 

 su[)port the plants in pots at the south-side of the house; bottom 

 heat is communicated thereby to the sand in which the plants 

 arc propagated. The foliage of the trees on the trellis and the 



