20 



shortage on account of an overrun of some other ingredient. 

 Such brands, of course, may be seriously out of balance and while 

 not excusable, the manufacturer evidently had no intention to 

 defraud. 



As a general rule the potash and phosphoric acid 

 Quality were furnished in the forms guaranteed. 



of It is hoped that methods of analysis may soon 



Plant Food, be perfected so that it will be possible to indicate 



the relative availability of the organic nitrogen in 

 mixed fertilizers. The importance of this m.ay, in a measure, be 

 realized when it is remembered that nearly 45 per cent of the 

 nitrogen used in the complete fertilizers this year was derived 

 from organic sources. It may be remarked, however, that more 

 mineral nitrogen has been used during the year than in the past. 

 The relatively low cost of nitrate of soda and sulfate of am^monia 

 will probably account for this fact. Nitrogen derived from 

 nitrate of soda is quickly available and is more easily lost by 

 leaching so that it would hardly be advisable nor economical to 

 use it as the only source of nitrogen. 



Brands Showing a Commercial Shortage of Over 

 50 Cents Per Ton. 



American Agricultural Chen.ical Co., Boston, Mass. — Standard 

 Complete Manure, No. 867. Nitrogen found 3.12%, guaranteed 

 .3.29%; available phosphoric acid found 7.81%, guaranteed 8%; 

 potash found 6.86%, guaranteed 7%. 



Williams & Clark's Am^ericus High Grade Special, No. 876. 

 Nitrogen found 3.10%, guaranteed 3.29%; available phosphoric 

 acid found 7.o8%, guaranteed 8%; potash found 7.03%, guar- 

 anteed 7%. 



Read's High Grade Farmers' Friend Superphosphate, No. 806. 

 Nitrogen found 2.78%, guaranteed 3.29%; available phosphoric 

 acid found 6.91%, guaranteed 6%; potash found 8.96%, guar- 

 anteed 10%. 



Bowker Fertilizer Co., Boston, Mass. — Stockbridge's Special 

 Complete Tobacco, No. 219. Nitrogen fcund 5.1t%, guaranteed 

 5.76%; available phosphoric acid fcund 4.95%, guaranteed 

 4.00%; potash found 9.98%, guaranteed 10%. 



