LYSIMETEE WATER. 



343 



1,000,000 litres of water, passed through six inches of the soils 

 already described, contain 



2. Series of analyses made in 1858. 



The waters analysed were obtained from six soils, and repre- 

 sent the quantity of atmospheric water tnat passed, from May 10 

 to Nov. 1, 1858, through a layer of earth of a square foot of 

 surface and 12 inches deep. The earth was ordinary unmanured 

 alluvial lime soil from the Isar. The plant selected for cultiva- 

 tion was the potato. I. Unmanured, and without vegetation. 



