. Journal of the New England Water Works Association . epth of 6 the top covered with porous sand \ in. deep. A small hole through thebottom of the can into which is threaded a loose cord to control the dripprovides the means for collecting the percolation and conducting it asrequired into a glass graduate. After filling, the cans were placed in atub of water and the material saturated through the hole in the bottom inorder to expel the air. In some of the experiments a device was used toincrease the pressure while filling the small cans with water by sealing thetops of the cans and cre
. Journal of the New England Water Works Association . epth of 6 the top covered with porous sand \ in. deep. A small hole through thebottom of the can into which is threaded a loose cord to control the dripprovides the means for collecting the percolation and conducting it asrequired into a glass graduate. After filling, the cans were placed in atub of water and the material saturated through the hole in the bottom inorder to expel the air. In some of the experiments a device was used toincrease the pressure while filling the small cans with water by sealing thetops of the cans and creating a partial vacuum on top of the sand, thusreducing the time of filling. Following saturation the cans were removedfrom the tub and filling over the top was begun. The arrangements for WIXSOR. 355 insuring a constant bead upon a series of tanks are indicated upon Plate 1 Vand accompanying photograph. Parallel tests of the same materials inboth large and small cans indicated a sufficiently close agreement to demon- X Ill1 I -J9 - 9 ip -i-nww —TT.
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Keywords: ., bookcentury1900, bookdecade1920, bookidjournalofnew, bookyear1922
