4 FRUIT CULTURE UNDER GLASS. 



growth ; but, for six months of the year, they do not, 

 from their position, embrace so much direct sunshine as 

 a lean-to house facing due south. Moreover, from the 

 greater amount of glass as a radiating surface in span- 

 roofed houses, they require more fire-heat to keep up the 

 temperature. In these respects the lean-to gives advan- 

 tages over the span-roofed pinery, in whatever position 

 the latter is placed. For starting pines in December 

 and the two following months, as well as for swelling 

 off fruit during winter and early spring, I recommend 

 lean-to houses, as represented by fig. 2. 



Via. 2. 



The dimensions of the two pineries represented by 

 the woodcuts, are 40 feet by 18 feet, which give a house 

 of handsome proportions. But as the extent of the 

 pineries must be guided entirely by the supply required, 

 I will not enter further into this question. Suffice it to 

 say, that it is more desirable to have several structures 

 of moderate size than a less number of larger ones. A 

 constant succession of ripe fruit is much more easily 

 kept up by having a number of compartments. 



