32 



PACKING THE TROUT OVA. 



the pipe, and between this valve and the sink two other pipes are 

 connected,- one being a cold-water supply, and the other a hot- 

 water supply, for washing and cleaning. These pipes are also 

 closed by valves worked by wooden handles outside the skirt- 

 ing, one to the right and the other to the left of the handle of 

 the valve on the 2-inch pipe. These three handles are all in a 

 line, and placed a convenient distance above the floor to be easily 

 controlled by the knee. 



The sink itself is lined with lead, and a lead basin, of a pecu- 

 liar shape, is placed within it (Figs. 2 and 3). 



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Immediately above the lead basin in the end of the sink an 

 overflow is provided, from which the waste is conducted into the 

 2-inch pipe below the valve. 



A wooden box, with a portion of one of its ends removed, and 

 made a little larger than a glass grille, is also placed in the sink, 

 one end resting on the inner edge of the lead basin, and retained 

 in its position by a back- weight resting on the edge of the sink ; 

 the other end held, when the sink is full, by flotation, against a 

 pin inserted in the elm framework that forms the top of the sink. 



The modus opercmdi is as follows : The valve on the hot-water 

 supply is closed by turning the handle horizontal ; the valve on 

 the 2-inch pipe is also closed by turning the handle upwards to 

 the perpendicular ; the valve on the cold-water supply is opened 

 by turning the handle upwards to the perpendicular. The sink 

 rapidly fills, but the overflow prevents the water rising more than 



