iv/o 



ENCYCLOPAEDIA OF AGRICULTURE. 



SUITI.EMENT. 



I -JO'J 



L 



Bluico r. When the whole of the water, or nearly so, is lifted up, of course the boards composing the 

 Bluice e must be attended to, lest tlie water force 'its way hack again upon the wheel. 



Fig. 1200. is a ground plan of the boiler, engine, and water-wheel ; in which a is the boiler ; b, the 

 engine ; c, the water-wheel shaft ; d, the paddles of the water-wheel ; e, the upper sluice, over which 

 the water is thrown ; /, the pond or reservoir which receives the water ; and g, the lower sluice, placed 

 across the drain which conveys the water to the wheel-race. 



Fig. 1201. is a section through the steam-engine and the water-wheel ; in which a is the boiler ; b. the 

 engine ; c, the shaft or axle of the water-wheel ; d, the paddles ; o, the tube for supplying water to the 

 boiler ; ;>, the steam pipe ; q, the fly-wheel ; r, the spur-wheels ; and ss, the roof. 



Fiji. 1202. is a longitudinal section through the water-wheel, the trough, and the two sluices ; in which 

 r is the axle of the water-wheel ; rf, the paddles ; e, the upper sluice, over which the water is thrown ; 

 /.the pond or reservoir to receive the water before it is carried off to the nearest river; m, the trough or 

 Wheel-race ; and g, the sluice to regulate the admission of the water from the land to be drained. 



Fig. 1203. is B section through the boiler lengthwise; in which a is the boiler; h, the fire-place, and 

 Hue round (he boiler ; i. the ash-pit ; k, the safety valve ; /, the tube for supplying water to the boilei ; 

 "t, manhole tor cleaning out the boiler ; and n, the chimney. 



