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water shall pass only througli it, and as tlie meshes are necessarily fine, 

 the screen must be large in comparison with the volume of water to 

 pass through ; and, when right in all other respects, it is liable to be 

 constantly clogged by floating particles of moss, weeds, leaves, etc., 

 and must be carefully watched and cleaned. Tlie plan may answer 

 well enough for one who wishes to produce only a small supply of 

 fish annually, but the plan will not answer for any one who wishes a 

 large supply, and that most of the eggs laid should produce fish, 

 because only those eggs will produce fish which are laid so that the 

 water shall constantly pass round them, and the fact being that 

 only those laid over the spring itself, or in a strong and shallow 

 current, are placed in these conditions. The favorable localities 

 being limited, the fact is that comparatively few of the eggs hatch, 

 Furman's patent race, or "brook shanty," as he terms it, obvi- 

 ates these difiiculties. A ditch is dug, say two feet deep, four 

 feet wide, and several hundred feet long. The sides are made 

 of boards. At the distance of five or six inches from the bot- 

 tom a cleat is nailed to each side. Upon these cleats are laid cross 

 pieces of planks about three inches wide and four feet long. These 

 cross pieces are not laid close together, but have an interstice of one- 

 quarter or one-eighth of an inch. Upon these cross pieces gravel is 

 laid to the depth of four or five inches. Now, then, if at the head of 

 the race a partition is made to run across the race from the top to 

 within six inches of the bottom, it will be seen that all the water will 

 be delivered under the planks supporting the gravel ; and if at the 

 end of the race a tight bulkhead is made reaching from the bottom 

 to within four inches of the top of the race (or in otlier words twenty 

 inches deep), it will be seen that the water can be let out only after 

 rising from the bottom through the cracks in the planking, percolating 

 evenly through the gravel, and rising to a height of about six or eight 

 inches above it. The height being regulated by the height of the 

 bulkhead at the end, it will be seen that this forms an artificial spring, 

 the water rising up through the gravel and being equally distributed 

 throughout the whole length of the race. The advantages claimed 

 for the race are that it dispenses with a hatching-house and the labor 

 required there, and that it can be used in any place where there is a 

 spring of water or marshy ground, or by the side of a stream. It is 

 claimed that the fish thus hatched are more healthy, and, when pro- 

 perly fed, show no extraordinary tendency to die during infancy. 

 The disadvantages of the race are that not so many of the eggs are 

 hatched as by other methods, that they cannot be cared for as in 



