PART VI. ORNAMENTAL GARDENING. 329 



the general walks of the pleasure ground. Most of the 

 others may be introduced in romantic, singular, wild, or melan- 

 choly places. 



Arches or gateways in the scenery of the pleasure ground, be- 

 sides their utility when properly placed^ are often picturesque 

 improvements, both by giving more force and strength of effect 

 to mere earth and vegetation ; and also by occasionally produc- 

 ing the charm of surprise, which, when unaffectedly introduced, 

 is sufficiently allowable. Thus in the transition from one scene 

 to another, an archway and close gate or door between them is 

 often necessary to complete the purpose of the separation 

 fence : now, though there be no difference in the kind of 

 scenery on each side, yet on approaching the gate from either, 

 the extent of vision is gradually diminished, from considera- 

 ble width, length, and height, to the mere size of the gateway ; 

 which, when opened the full extent, bursts upon the sight at 

 once. Quick and angular turns of walks have a similar effect, 

 and may often be advantageously introduced. 



Hot-houses, in ornamental gardening, are chiefly of the green- 

 house or conservatory kind, and are more properly objects of 

 use than external beauty, though this also ought to be attended 

 to. They will naturally be considered in Chapter IIL 



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