10 



2. That 104 brands were dciicient in one element. 



3. That 30 brands were deficient in two elements. 



4. That (i brands were deficient in all three elements. 



5. That 24 out of the 30G brands (7.85 per cent of the whole 

 number) showed a commercial shortage; that is, they did not 

 show the amount and value of the plant food as expressed by 

 the lower guarantee, although the values of any overruns were 

 used to offset shortages. 



The deficiencies were divided as follows : 



60 brands were found deficient in nitrogen, 



SO " " " " " available phosphoric 



acid, 

 71 '■ '■ ■■ '■ " potash. 



AVhcn the data furnished by the above summar}- arc compared 

 with those of previous years, it is clear that greater care has been 

 exercised on the part of the manufacturers, the guarantees being 

 more generally maintained. More brands were deficient in potash 

 than during the previous year which fact may be due to the 

 shortage in the supply of potash salts, occasioned by a disagree- 

 ment among the companies fonning the potash syndicate and to 

 a subsequent interference by the German government. The 

 brands having a commercial shortage were much fewer in number 

 than for 1909 and the amount or value of the shortages was 

 much less as may be seen from the following table : 



Commercial Shortages ix Mixed Complete Fertilizers 

 FOR 1910 AS Compared with the Previous Year. 



Commercial Shortages. 



Over $k()() per ton 



l^ctu-ccil Ki.m ;ui(l .'S-t.OO per Ion 



.'ii;2.()() and $3.(10 • ■ 



81.00 and $2.0(1 ■ • 



L'ader $1.00 not less than 25 cts. per ton. 



Number of Brands. 

 1910. 1909. 



none 



linlic 



c. 

 IS 



It 



There were a few brands showing rather serious deficiencies in 

 some eletnent of plant food, but which did iiot suffer a comtTiercial 



