New York Agricultural Experiment Station. 679 



This is indicated in the following tabulation: 



Table XXVI. — Number of Samples Above and Below Certain Limits in 



Guaranty. 



Complete fertilizers 



Phosphoric acid and potash 



mixtures 



Tankage 



Bone 



Fish scrap 



Nitrates 



Potash compounds 



Nitrogen 

 Guaranty. 



Over 



3.30 



per ct. 



Number 



samples. 



106 



19 

 12 



All 

 All 



Under 



3.30 



per ct. 



Number 



samples. 



508 



1 



22 

 

 



Phosphoric Acid 

 Guaranty. 



Over 



5 per 



ct. 



Number 

 samples. 

 597 



All 



All 

 All 

 All 



Under 



5 per 



ct. 



Number 

 samples. 

 17 





 

 

 



Potash 



Guaranty. 



Over 



5 per 



ct. 



Number 

 samples. 

 355 



66 



All 



Under 



5 per 



ct. 



Number 



samples. 



259 



51 



A summary of this table can be made in the following statements : 



(1) In complete fertilizers, the present law affords more complete 

 protection to farmers than the former law in respect to nitrogen in all 

 but the high-grade brands, which constitute about one-sixth of the 

 whole number of samples analyzed. 



(2) In the case of phosphoric acid, only 17 samples out of 614 con- 

 tained less than 5 per ct., while in case of 597 samples the former law 

 would favor the interests of farmers. 



(3) In case of potash, 355 cases would be given better protection 

 under the former law, and 259 under the present law. 



(4) In the case of all other mixtures and materials containing phos- 

 phoric acid (such as acid phosphate, mixtures of acid phosphate and 

 potash, tankage, bone, etc.), the present law gives less protection in 

 every case, because the guaranteed percentage of phosphoric acid is 

 above 5 and generally very much above that figure. 



(5) In most cases of tankage, the present law affords less protection 

 in nitrogen deficiency, while, in case of bone, about two-thirds of the 

 samples are given better protection in nitrogen. 



(6) All nitrates and all potash compounds (muriate, sulphate, 

 kainit, etc.), are afforded less protection under the present law. 



