insoluble or acid-soluble lime phosphate into the available 

 or citrate soluble condition. For this purpose half -gallon 

 wide-mouthed jars were used and the following mixtures 

 placed in each : 



No. 1. 2 lbs, Florida phosphate with ^ lb. cotton seed meal, 

 u 2. 1 lb. " " " A " " " " 



♦' 3. 2 lbs. South Carolina floats with ^ lb. " *' 

 " 4 1 lb " " " • "1 " " " " 



" 5. 2 lbs. Florida phosphate " -J " cotton seed. 

 " 6. 1 lb. " " " i " " " 



" 7. 2 lbs. South Carolina floats " I " " 

 " 8. lib. " " " " i " 



The contents of each jar were rubbed up in a porcelain 

 mortar, moistened with water and mixed as thoroughly as 

 possible. The mixtures were stirred frequently, in fact, 

 nearly every day. Fermentation began within a day or two 

 and continued during the whole period of the experiments. 

 Samples for analysis, that is, for the determination of the 

 available phosphoric acid, were taken from the jars and 

 analyzed with results as follows: 



