1912.] rUBLIC DOCUMENT — No. 31. 49 



and soils sent on hy farmers has been attended to as in the past, 

 and a more detailed report of this portion of the work will bo 

 fonnJ on a subsequent page. 



The work of the collection and analysis of registered fertil- 

 izers shows a substantial increase over that of the previous year ; 

 in fact, a larger number of commercial fertilizers has been reg- 

 istered, collected and analyzed during the season than for (uiy 

 previous year. A new fertilizer law was enacted during the 

 season and went into effect Dec. 1, 1911. The full text of the 

 law is given in Bulletin lS*o. 140. 



As a result of co-operative studies made by the experiment 

 stations of jSTew England, jSTew York and New Jersey we have 

 been able- this year, for the first time in the history of the fer- 

 tilizer control work, to publish analytical data as to the charac- 

 ter of the organic nitrogen supplied by the various brands sold 

 in the State. The additional work entailed has required the 

 assistance of one extra man during the greater part of the 

 season. 



On a few subsequent pages will be found summaries covering 

 the fertilizer control work : — 



(a) Fertilizers licensed. 



(/;) Fertilizers collected. 



(c) Fertilizers analyzed. 



(d) Trade values of fertilizing ingredients. 

 (c) Unmixed fertilizing material. 



(1) Nitrogen compounds, 



(2) Potash compounds. 



(3) Phosphoric acid compounds. 

 (/) Grades of fertilizer. 



(g) Summary of analyses and guarantees. 

 (h) Quality of plant food. 



(1) Nitrogen. 



(2) Phosphoric acid. 



(3) Potash. 



(i) IMiscellaneous fertilizers, by-products and soils for free 

 analysis. 



