I ed A et ge es 
Spread for very considerable distances during flood 
WATER SUPPLY AND IRRIGATION. 179 
“T think also that wine-growing might be profitably carried on 
under irrigation, as vines thrive very vigorously here when 
liberally watered, and produce grapes of great richness and flavour, 
O . . . 
xngine and pump for irrigating and shee 
Washing purposes, I feel sure that if 500 or 1,000 other people were 
each withdrawing a similar quantity of water from the river, the 
stream would be found insufticient. : 
“This drawback could of course be obviated by the construction 
of weirs to impound large quantities of water in the channel and 
prevent it from running to waste; but this work would probably 
be found too expensive to be undertaken until the country becomes 
very much more thickly peopled than it is likely to be for many 
years yet.” 
rtant 
bearing on the question; and, before proceeding further, it may be 
Well to consider the nature of the rivers from which our supply 
‘they run through deep and comparatively narrow valleys, bound 
PY Tanges of considerable abruptness, ani erally of a rocky, 
: ; ae th in 
-guiten character ; that when the fall is slight, there they run 
deep-seated te 
