330 SALT, NITRATE OF SODA, SALTS OF AMMONIA, ETC. 



lime experiment, for the sake of comparison, another 

 made with ground bones on a plot of the same size. 



Experiment at Oberbobritzsch. 

 Lime manuring (110 cwts. quick lime). 



Experiment at Friedersdorf. 

 Lime manuring (same quantity as above). 



Guano produced, in the year 1854, on the field at 

 Oberbobritzsch, a higher clover crop than the lime (see 

 page 266) ; but on the field at Friedersdorf it was 

 smaller, 616 Ibs. of guano produced, at Friedersdorf, 

 2337 Ibs., at Oberbobritzseh, 5044 Ibs., of clover-hay. 



Experiments, in which I brought lime-water in con- 

 tact with different samples of arable soil, have shown 

 that the latter possesses a similar absorptive power for 

 lime as for potash and ammonia. The earth was mixed 

 with lime-water, and after remaining at rest until all 

 alkaline reaction had disappeared, a fresh quantity of 

 lime-water was then added, just sufficient to cause a 

 feeble but permanent alkaline reaction. 



