FOE PLEASURE AND PEOFIT. 



19 



in the drawing to prevent it taking up too much space ; G is 

 the supply channel ; F is the surplus water channel ; D D D 

 the sluice. All these references are purposely identical with 

 those of Fig. 3. In this case the water, instead of falling 

 direct from G into A, is separated therefrom by ai so'lid earth 







FiGt.6- 



Figs. 4 and 5. Plan and Section of Underground Water Supply. 



bank J, and the water is really conducted underground 

 through square wooden channels, made after; the manner of 

 very elongated boxes. Two or more of these channels may 

 be used according to the size of the redds. Halve a sufficiency 

 of them by all means; they are easily enough made and fitted. 

 A convenient size for them, is six inches square, inside 



