726 CONTRIBUTIONS TO OUR KNOWLEDGE OP SOIL-FERTILITY, Vli. -XI., 



As the differences were less than had been expected, a second 

 experiment was made, in which the moisture was brought to 19% 

 with sterile water. This was equivalent to half -saturation. 



Experiment ii. 



These experiments show that there is only a slight difference 

 effected by the different treatments, the small difference, however, 

 being in favour of the preliminary treatment with chloroform. As, 

 according to my view, the differences produced by the antiseptic 

 treatment are caused largely by the native agricere, I continued 

 the experiments with a soil richer in this substance than the allu- 

 vial soil which had been used. 



An air-dried garden-soil was heated for 45 minutes at 62°-68°, 

 or treated overnight with 5% chloroform. In the first experiment, 

 No. iii., the soils were moistened with a soil-suspension containing 

 an equivalent of 1% of raw soil, while, in the second, sterile water 

 was employed. The chloroformed soils were difficult to moisten, 

 and accordingly were thoroughly stirred and gently pressed flat. 



Experimknt iii. 



