2'54 Repoet of the Depaetment of Ciiemistey. 



produced on the other boxes, this increase being presumably duo 

 to the phosphoric acid utilized. It will be observed that in each 

 case the percentage increase of dry matter, using the mono-calcium 

 phosphate boxes as a basis, is greater than the relative percentage 

 of available P 2 5 as shown by the Wagner method and much 

 greater than that shown by the official method. 



