LYSI.MHTKR WATER. 



3G9 



4. — Series of analyses made in 1859, 1860. 



This series is a direct continuation of the third. The waters 



analysed passed through the same soils through which the 



waters of the third series had already passed. The fourth series of 



experiments continued from Nov. 16, 1859, to April 12, 1860. 



The quantity of sand very small. 

 B B 



