58 



JOURNAL OF THE 



TABLE IL 



Calculated on dry 



basis. 



Total Phos. Acid. 

 Sol. " " 



Insol. " 

 Rev'd " 

 Avail. " 

 Moisture . 



" 60° 

 "100° 

 ♦' 60° 

 "100° 

 " 60° 

 " 100° 







p. c. 

 21.77 



7.83 

 8.46 



5.48 





p. c. 



21.77 



6.16 

 8.72 

 8.76 

 6.89 

 6.84 

 13.31 1 13.05 



1 13.00 



3i.49i26.16 





p. c. 

 21.77 



5.40 



9 06 



8.97 



7.31 



7.40 



12.71 



12.80 



30.77 



C !1^ 





p. c. 

 21.77 



5 10 



8.71 



8.31 



7.96 



8.33 



13.06 



13.43 



16.14 



C <D 



c o 



.id 

 O Q^ 



p. c. p. c. p. c. 

 Z177 



3.79 



7.24 



7.34 



10.74 



10.64 



14.53 



14.43 



6.01 



O <ii 











p. o. p. c. 



21.77 21.77 



3.17 



8.1S 



7.57 



10.42 



11.03 



13.59 



14.20 



6.86 



3.091 



7.63 



7.68 



11.05 



11.00 



14.14 



14.09 



6.03 



p. c. 

 21.77 



3.04 



7.32 



7.24 



11.41 



11.49 



14.45 



14.53 



5.36 





p. c. 

 21.77 



3.25 



7.66 



7.60 



10.86 



10.91 



14.11 



14.17 



6.10 



TABLE III. 



The sample yielding about 8 per cent. sol. phos. acid was exam- 

 ined through a much longer time than either of the others. For 

 comparison, therefore, we must consider them at the end of the same 

 time, i. e., at the end of the 4th week. During this time, as indeed 

 throughout the experiment, the samples worked on stood in large 

 earthenware 1: ans in the Laboratory and were protected from dust. 



