ON HEATING PEACH-HOUSES. 21 



is much better to obtain the necessary degree of 

 heat in a house by means of a number of pipes 

 moderately heated than by the use of fewer highly 

 heated. Of course this increases the initial cost 

 of the heating apparatus, but it would be more 

 than compensated for by the economy in fuel, in 

 heating the pipes moderately rather than to a maxi- 

 mum degree in order to get up and maintain 

 the desired temperature. Moreover, the degree of 

 heat thus acquired is necessarily more genial 

 and less arid than that secured by highly heated 

 pipes, in addition to which the heating apparatus 

 is subjected to less strain in doing the work required 

 of it. 



Either socketed pipes with joints made of a few r 

 rounds of yarn and cement to finish off with, or 

 plain-end pipes connected with india-rubber joiiits 

 (rings) may be used. Both are effective and easily 

 made joints; the india-rubber joints, if a little more 

 expensive, are more easily made and quite as easy 

 to take apart as to put together, which circumstance 

 is an advantage worthy of consideration by those 

 about to heat their houses by means of hot water, 

 especially so in the case of leaseholders. 



A " lean-to " peach-house of the description indi- 

 cated above, should, if used to produce ripe peaches 

 by the middle or end of April, have three flow 4-inch 

 pipes in front and two returns running alongside the 



