Contributions Toward the Improvement of the Culture of Salmonoids And Crawfish in Smaller Water-Courses
The book Contributions Toward the Improvement of the Culture of Salmonoids And Crawfish in Smaller Water-Courses was written by author Wozelka-Iglau, Karl. [from Old Catalog] Here you can read free online of Contributions Toward the Improvement of the Culture of Salmonoids And Crawfish in Smaller Water-Courses book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Contributions Toward the Improvement of the Culture of Salmonoids And Crawfish in Smaller Water-Courses a good or bad book?
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7) should only be dammed up to the foot of the higher board. There would be no harm even if in each section the upper part of the bottom were kept dry for a length of 1 to 2 meters [3.28 to G.o6 feet]. In the lower part of each section the water will, in the beginning, before it reaches its proper level, overflow the board a little both at the top and at the sides. It need not be feared that any fish will escape. To better illustrate the use of the damming boards, we will give a practical examp...le: A ditch GO meters [19.6 feet] long, aud 70 centimeters [2.4 inches] deep, will, with a total fall of 190 centimeters [7.4 inches] only need three damming boards placed at equal distances from each other. With three boards and a ditch 70 centi- meters deep, however, a fall of 210 centimeters [8 inches] could be used. But as we need an entire height of boards of 190 centimeters [7.4 inches] in order to shut off the water in the ditch, the entire fall might be 20 centimeters [0.78 inch] more, and still three boai'ds would suflice.
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