66 



EXPERIMENT STATION. 



[Jan. 



have been collected up to December 10 in our general mar- 

 kets bj an experienced assistant in this department. 



Pour hundred and ninety-seven samples of officially col- 

 lected fertilizers have been analyzed at the present date (De- 

 cember 10), representing 323 distinct brands of fertilizers. 

 Some of these analyses were published in our July bulletin 

 No. Ill ; the others will be published in our January bulle- 

 tin. The analyses of other officially collected samples of 

 fertilizers, not included in these two publications, will be 

 published in our March bulletin for 1907. Twenty-eight 

 more brands of fertilizers were licensed in Massachusetts 

 during the year than in 1905, and 10 more have been analyzed 

 than during the past year. 



The following table shows the general character of the 

 fertilizers analyzed during 1906, as comj)ared with the j)re- 

 vious year : — 



(rt) Where three essential elements of plant food were guaranteed 

 (complete fertilizers) : — 

 Number with three elements equal to or above the highest guarantee 

 Number with two elements above the highest guarantee, 

 Number with one element aljove the highest guarantee, . 

 Numljer with three elements between the highest and lowest guarantee 

 Number with two elements between the highest and lowest guarantee 

 Number with one element between the highest and lowest 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, . 



(b) Where two essential elements of plant food were guaranteed 



(bones, tankage, fish and ashes) : — 

 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 guarantee. 

 Number with one element below the lowest guarantee, . 



(c) Where one essential element of plant food Avas guaranteed 



(chemicals) : — 



Number above the highest guarantee 



Number between the lowest and highest g^uarantee 



Number below the lowest guarantee 



11 

 15 



59 

 100 

 74 

 24 

 1 

 14 

 48 



71 



106 

 71 

 41 

 

 14 

 45 



The quality of the officially collected fertilizers for 1906, 

 as shown by the above table, shows a gain over the previous 

 year. 



