UTILISATION OF WALLS AND BUILDINGS. 



I LL walls may be used for fruit-growing, and will bring a good return if 

 the trees are properly attended to. Walls arc valuable in absorbing heat 

 and yielding it by radiation for the benefit of trees trained against them. A low 

 wall is not so favourable for fruit-growing as a higher one, because it accumulates 

 less heat during the day, and parts with it more quickly when the surrounding air 

 is colder. 



There is considerably more heat concentrated on a 12-feet wall, and the ground 

 in front, than is the case with a 6-feet one, and where peach trees fail on a 6-feet 

 wall they may succeed against one 12 feet in height. Eegard, therefore, must be 

 had to the height of walls as well as to location in respect of their value for fruit 

 production. 



Walls running east and west have one surface to the south, which is the best aspect, 

 the other face is necessarily presented to the north, and this is of the least importance, 

 but the superior results obtained from the southern side more than counterbalance the 

 loss. Walls running north and south have each an east and west aspect, and the latter 

 is the more desirable. Whatever point of the compass a wall presents its surface to at 

 right angles, that is the aspect thereof. 



&outh Walls. Apricots, cherries, figs, grape-vines, peaches, and nectarines are 

 appropriate for the south and favourable positions generally, but in cold districts pears 

 or plums should be planted. Similar remarks apply to trees for south-east and south- 

 west walls in warm and cold localities. 



West Walls. Apricots and peaches succeed on these, in districts south of the Thames ; 

 north of London pears or plums ought to be planted. 



East Walls. Pears and plums. North-east and north-west walls answer in the 

 southern parts of the country for the same fruits, but in the northern and cold districts, 

 the Morello cherry succeeds better and is more profitable. 



North Walls. Although the Duko race of cherries succeeds on north walls, the fruit 



