Eeport 1J. S. F. C. 1883.— Benecke. Tiali-ponds. 



PLATE I. 



Fig. 1.— Valley, to be transformed into pouds by tiieai s of dikes. 



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Fig. 2.— Stakiuo- out tlie dike. 



Fig. I^.^Position of the pieces of sod. 



