44 Modern Fish culture in Fresh and Salt Water. 



Of course a slovenly superintendent who is content 

 to have leaky troughs, a wet floor, and to slosh around 

 in rubber boots, cares nothing for a leak here and there, 

 any more than he does to see men spit on the floor of his 

 hatchery, and it is not for him that this is written. 



The subject of dry and clean floors interested me 

 years ago, and still does. My floor at Cold Spring Har- 

 bor is clean, but a trough that leaks a few drops, just 

 enough to show, is an annoyance. I was called to plan 

 a hatchery at Bath, Steuben county, N. Y., for the State 

 in 1894. I arranged for a row of troughs on each side 

 of the building, with a six-foot aisle in the middle at the 

 foot of each series. The troughs were arranged by twos, 

 for I would not have them in threes unless the lot was 

 too small to expand the hatchery to the required capac- 

 ity ; and as the water was to be brought in a six-inch iron 

 pipe for some 600 feet,' with a fall of about 10 feet to the 

 hatchery floor, my old ideas naturally ran to having 

 the pipe branch above the building and flow into two 

 distributing troughs, one on each side, and to discharge 

 from the hatching troughs under the floor. I had long 

 used brass gate-valves in wooden supply troughs, and 

 as there were to be 18 troughs on each side I finally de- 

 cided that the following sketch would be an improve- 

 ment on any method yet devised, and I made a plan 

 which I hoped to introduce, but the Commissioners got 

 into a dispute and another man finished the work. 



The following are the advantages of this mode of sup- 

 ply : 



1. Absolute control of the supply without a drip when 

 shut down. 



2. Saving a portion of the space occupied by the sup- 

 ply trough. 



3. The ease of cleaning the main pipe A by the full- 



