Bulletin 831, U. S. Dept. of Agriculture. 



Plate XIII. 



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OOPEti CI5TLRI1 



6'* 10* 14' Deep 



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 aSTERHS 



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DIAQRAM 

 HYDRAULIC LABORATORY 



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DIAGRAM **MOD£L 



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dfMBOLS *"~o°TERH5 USED. 



Diagram of i esting Laboratory and Setting of Siphons on Crest. 



For experiments on models at Throop College (California). 



