THE FORCING GARDEN. 



during winter, when the frost is not too severe, (or it' they 

 have been formed in autumn so much the better,) proceed by 

 bringing in the prepared mould, and filHng up the excavated 

 space, observing that it must not be attempted if the weather 

 be by any means wet ; the mould will be dry, having, as we 

 have before directed, been laid up in ridges, so that the wet 

 could pass freely off after each turning. In filling up the bor- 

 ders, the mould should not be much trodden upon, but allowed 

 to sink of its own accord, an allowance being made for it, 

 by filling the borders up a foot higher than they are ultimately 

 intended to be. 



Upon the supposition that the flues and parapet or front 

 wall stand upon pillars, in order that the roots by that 

 means may pass freely out of the house, care must be taken, 

 in filling up the borders, to have all these spaces between the 

 pillars properly filled up with the prepared mould, accordingly 

 as the process of filling the border proceeds. If this be not 

 duly attended to, the mould will naturally sink, and thus a 

 space be formed, which will prevent the roots from gaining 

 the outside borders, being in itself a very serious misfortune, 

 and the cause will not be perceptible until the trees have sus- 

 tained a material check. If the mould brought in be in a fit 

 state wherewith to fill the border, as far as regards moisture, 

 it will not be amiss to push it in rather firm in such cavities, 

 with the view afterwards of obviating all pressure on that part 

 of the border, and thereby preventing any injury to the roots ; 

 but after the house has been finished, and during the three 

 or four subsequent months, these spaces should be examined, 

 and filled up where they sink. The borders being finished, 

 both without and within, and the glasses on, the whole may 

 then be supposed to be ready for planting. 



It is a matter of much importance to the future success of 

 the trees, that they be well chosen, and it is of still greater im- 

 portance to the proprietor, that the selection be well formed, 

 which, however, is no easy task. The many mistakes made 

 by some nurserymen, in sending out trees under wrong names, 

 occur so frequendy, that if twelve trees be planted, three or 

 four out of the number prove incorrect ; and this is not, nor 

 can be, detected until too late, when the trees are estabhshed 



