GLEANINGS ON IIORTrcULTUUE, 



49 



From this boiler a wroiight-iron pipe rises of about two inches 

 in dimension, to a height equal to that which the four-inch cast 

 metal-pipes have to rise ; and the water is conveyed from a small 

 tank, which contains about a gallon and a-half, into the flow and 

 return-pipes and boiler. The tank must be often replenished as 

 high as the safety-valve, as shown in the accompanying sketch. 

 There is no danger of the pipes bursting, as long as the tank 

 contains any water, for the pipes and boiler take about six 

 large water-cans to fill them, and the pipes are hei-metically 

 sealed. Of all the methods lately invented for heating con- 

 servatories, &c., with hot water, there is not one that I know of 

 equally useful and reasonable. From the small quantity of Welsh 

 coals (by putting on little knobs) that is consumed, this system 

 for economy is well deserving of notice ; and I am convinced, 

 from practical knowledge, that an invention more important, on 

 such simple and safe principles, and adapted to such a variety 

 of circumstances, than Warner's conservatory boiler, has not been 

 discovered. The water is made to boil in five minutes ; a circu- 

 lation takes place in the pipes, which is soon given out in the 

 house, and the temperature is maintained for a long period, by 

 means of a damper in the chimne}', at nearly a uniform point of 

 sixty-five degrees Not being liable to accident and derange- 

 ment, as many other principles on which boilers are constructed, 

 Warner and Co.'s construction must be pronounced without 

 hesitation the acme of perfection. The form of the boiler pre- 

 sents the greatest surface to be acted upon by the fire, of which 

 the preceding sketch will have given some idea. The exterior 

 forms the boiler, and the centre contains a small fire on a grate, 

 which is easily let down to be cleaned. 



SYRINGING WITH CAUTION. 



Until the blossoms begin to expand, they should be syringed 

 at nine in the morning, and at four, p.m., when the house should 

 be shut up for the night, and a regular heat maintained of sixty- 

 five degrees temperature, which is of the utmost importance to 

 the welfare of the trees, as well as to insure a good crop of fruit. 

 The slower the sap is put into motion the stronger will the buds 

 break, and the blossoms will consequently be stronger. The 

 wood-buds will also push with greater regularity and strength, 

 when air is freely admitted. Great caution must be used that 

 the temperature of the house be not allowed to exceed sixt3'-five 

 degrees, as before mentioned, for the buds will then push weakly, 



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