THE FLORAL WORLD AND GARDEN GUIDE. 209 



to train over the roof or sides of the building. Pig. 7, stage, 

 which must be strong enough to bear the plants, but may be' made 

 in parts, so that it can be removed without having to be knocked 

 to pieces. It will be necessary, in order to protect the building 

 from damp and the liability to settle down, to place it upon some 

 firm and solid matter let into the ground, as brick piers or wood 

 blocks. A platform of bricks laid on the surface, gives a firm and 

 lasting foundation, provided the subsoil has not been recently 

 disturbed. 



The heating of a movable house must also be managed by a 

 movable apparatus, which will be some kind of stove, and which 

 must have a pan on the top to hold water; and as artificial heat in 

 such a house as this will only be required in winter, the stove 

 might, for that period, occupy a place near one of the doors, and 

 the smoke-fcube be carried through the glass at the top of the 

 house. Should a building of this kind be required for vines, the 

 side lights should be reduced to one half the height, and these to 

 open, as here shown, for ventilation ; the roof lights would then be 

 longer, and a much steeper roof obtained. A small aperture or two 

 at the ridge, capable of being closed by a wood slide, would, with 

 the side lights hung as recommended, effect a perfect ventilation. 

 The walk would, in such a house, be down the centre, and the vines 

 might be planted in boxes, having large openings in their bottoms 

 to allow the roots to escape into a border made up inside the house 

 for that purpose. The planting them in boxes would enable them 

 to bear removal at almost any season. 



AUTUMNAL SHIFTING OF PLANTS IN POTS. 



XCEPT those of very slow growth, all plants which have 

 stood in pots during the summer months, will, by this 

 time, have become partly root-bound, by filling the pot 

 with their roots ; and unless they are looked after in 

 time, will put on a sickly appearance, their leaves 

 growing yellow, the young branches shooting weakly, and the flower- 

 buds, if any, shrivelling and falling off without expanding. The 

 remedy for all these evils is repotting in fresh earth, which ought 

 to be done, if possible, before the middle of September, for room- 

 plants, or those which cannot be protected during winter except in 

 a cold frame or a greenhouse. Where artificial heat is at command, 

 the season is less important. If the shifting be delayed later for 

 most sorts of room plants, they will not have time before the setting 

 in of cold weather to establish their roots in the fresh earth. 



These remarks apply more particularly to geraniums, fuchsias, 

 hydrangeas, and calceolarias. Some sorts, such as myrtles, oleanders, 

 creeping cereus, American aloe, and other succulent plants, will 

 not require shifting oftener than once in two or three years, and 

 then the spring is perhaps the best time. But though large-growing 

 plants or shrubs, Buch as orange-trees, after being stationed in the 



September. 



