PRACTICAL CARP CULTURE. 



25 



is that of the "Monk," mentioned first in this country by Hugo Mulertt, 

 of Cincinnati, Ohio, afterwards by Rudolph Hessel, Superintendent of 

 Government ponds at Washington, D.C., and put into practical operation 

 by Dr. H. H. Gary, Superintendent of the Fisheries of Georgia, through 

 whose kindness I have the pleasure of presenting the illustration. 



A GERMAN MONK. 



The wood-cut above represents this simple apparatus that has become 

 so popular; a is a wooden box running crosswise through the dam, six 

 inches below the lowest point in the collector, so that it will insure the 

 complete emptying of the pond, made of heart-pine plank, being twelve 

 inches wide and two thick, securely nailed together. The upright part, 

 6, is of the same material and size, and joins it at right angles, and of 

 sufficient length to extend some distance above the water line. This is 

 made secure to the horizontal portion, and it will be of great advantage to 

 give the whole a dressing of coal tar. The side of the upright next to the 

 pond is left open, and narrow strips are nailed to the uprights on the 

 inside to constitute grooves for the gate pieces, c c c c. ; d is a strainer of 

 wire, secured in a frame of the same size as the gate pieces, c. When it is 

 desired to empty the pond, remove the highest gate piece, c, and substitute 

 the strainer, d. When the water line is lowered to the next gate piece, 

 remove it and substitute the strainer for it, as in the first instance, and so 

 on until the water is drawn down nearly to the collector, then the mud 

 can be removed from the collector, the fish dispersing while this is being 

 done. The water can then be drawn oft' until the fish are drawn into the 

 collector, when they can be readily removed with the dip-net, when the 

 last gate piece can be taken out and the collector completely emptied. 

 The only defect is in making the gates tight. If the water supply is 

 abundant, this is of no consequence, as the leakage would not allow the 

 small fish to pass out, and still might constitute a part of the overflow. 



