POOLS AND FOUNTAINS 173 



near enough to provide a rivulet which can be con- 

 ducted through the grounds, we can make use of it 

 in various ways. If there is an appreciable fall in 

 the ground we can scheme a cascade both at its 

 entrance and its departure from the garden, leading 

 the water in a single spout to fall into a circular 

 pool. Where the volume of water is small, a little 

 stone-edged canal may be formed along the centre 

 or the side of a lawn or flower garden, enlarging 

 itself into square or circular pools at various points, 

 and left clear or planted with flag and rush at 

 pleasure. The narrow, straight line of water 

 between its stone margins is a pretty feature in a 

 formal garden, and is a simple method of conduct- 

 ing the water towards and away from a central pool. 

 Where the stream is of larger dimensions, it will 

 be well to treat it architecturally for some part of 

 its length at least. The natural winding bank of a 

 river is, of course, delightful in its passage through 

 meadowland or wooded glades, but in the garden 

 the straight margin is the more appropriate, and has 

 in it greater possibilities of beauty. The various 

 types of wall and balustrading described in our 

 earlier pages for terraces will make an excellent 



