20 



CONTROL SERIES NO. 122 



PRODUCTS SUPPLYING NITROGEN AND PHOSPHORIC ACID 

 Bone and Tankage, Dry Ground Fish, Animal Tankage, Milorganite 



\ 



a. Available phosphoric acid found 9.04'?J^; guaranteed 7.00%. 



b. Available phosphoric acid found, 2.63%; guaranteed 2.00%. 



See table of "Unmixed materials showing a commercial shortage of $1 or more per ton. 



See table of "Unmi.xed materials showing a commercial shortage of SI or more per ton.' 



