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PUBLIC DOCUMENT — No. 83. 



51 



Three hundied and twenty-six brands of fertilizers and 

 agricultural chemicals have l)een licensed in Massachusetts 

 during the year. Five hundred and seventy-four sani[)les 

 of fertilizers have been collected up to the present time, in 

 our general markets, by experienced assistants in the station. 

 Five hundred and eleven samples had been analyzed at 

 the beginning of December, 1905, representing 313 distinct 

 brands of fertilizers. These analyses Averc published in two 

 bulletins of the Hatch Experiment Station of the Massachu- 

 setts Agricultural College : No. 104, July ; No. 107, Novem- 

 ber, 1905. The analyses of other officially collected samples 

 of fertilizers not included in these two bulletins will be pub- 

 lished in our next bulletin, in March, 190(i. About the 

 same number of fertilizers were licensed in Massachusetts 

 during the year as in 1904. The results of our inspection 

 work show 18 more samples analyzed during the season 

 than for the previous year. 



The following table gives a ])rief al^stract of the results of 

 analyses of the official commercial fertilizers in comparison 

 with the year previous : — 



(a) Where three essential elements of plant food were guaranteed : — 

 Number with three elements etjual to or above the highest guarantee, . 

 Number with two elements above the highest guarantee, 

 Number with one element above the highest guarantee, .... 

 Number with three elements between the lowest and highest guarantee. 

 Number with two elements between the lowest and highest guarantee, 

 Number with one element between the lowest and highest guarantee, . 

 Number with three elements below the lowest guarantee, 

 Number with two elements below the lowest guarantee, .... 

 Number with one element below the lowest guarantee, .... 



(6) Where two essential elements of plant food were guaranteed : — 

 Number with two elements above the highest guarantee. 

 Number with one element above the highest guarantee, .... 

 Number with two elements between the lowest and highest guarantee. 

 Number with one element between the lowest and highest guarantee, . 

 Number with two elements below the lowest gviarantee, .... 

 Number with one element below the lowest guarantee, .... 



(c) Where one essential element of plant food was guaranteed : — 



Number above the highest guarantee 



Number between the lowest and highest guarantee 



Number below the lowest guarantee, . . . . . 



