FERTILIZERS. 



879 



"Both of tho samples show a liigh povcentago of availahlf i)liosplioric acid in the 

 original hone, hut it will he ohstTved that as the anioiiiit of hono in the mixture 

 decreases the amount of available increases. In the steamed bono it increases from 

 37. C per cent when 2 gni. are used to .^1.1 per cent when but f gni. is iised. In the 

 button hone it increases from '2'^.'^ per cent when 2 gm. are used to :W.!) per cent 

 when h gm. is used. While this docs not prove tliat no inriuence on solubilitj- is 

 exerted by the other materials in the mixture, it docs ])rovo that the quantity of 

 bono taken for analysis has a <lecided inllucncf upon the percentage of <itrate solu- 

 ble that may be obtained.'" 



Fertilizer control, II. B. Battle {yorfh Carolina Sta. Rpt. 1895, 

 p^). IX-A'VI). — Tlie number of brands of fertilizers sold in N^ortli 

 Carolina in 1895 was 541, classified as follows: Simple superidiosphates 

 105, superphosphates witli potash 3G, ammoniated superphosphates 330, 

 ammoniated snperphospliates without potash 11, kainit 38, miscellane- 

 ous 21. Of these 511 brands 180 were made in Virginia, 137 in North 

 Carolina, 96 in South Carolina, 88 in Maryland, and the rest in other 

 States, including Missouri, Xew York, Pennsylvania, .Massachusetts, 

 New Jersey, and Delaware. The relative amount of fertilizers manu- 

 factured in North Carolina has steadily increased since 1880. At that 

 date only G.38 per cent of the fertilizers used in that State was manu- 

 factured there; in 1895, 14.24 per cent. 



The following table shows the average actual and guarantied compo- 

 sition of the princii)al classes of fertilizers sold in the State from 1890 

 to 1895, inclusive: 



Composition of fertilhers on sale in Xorth Carolina, 1S90-95. 



Kind of iLTtilizer. 



Tear. 



Acid pho.spliatps with pntasli 



Ammoniatcxl .onperphosphates 

 witli potash 



Available phos- 

 phoric acid. 



Found. 



Guaran- 

 tied. 



Per cent. 



1890 12. 92 



1891 12. 21 

 ..,,,, ; 1892 12.25 



AciQ phosphates ( 180S 12 93 



1894 ' 1:173 



1895 1.3.29 



1890 I 12.04 



1891 11.17 



1892 I 11.22 

 ]8!t;i 10. 38 

 1K94 11.27 

 18H5 10.78 I 



1890 9. 11 



1891 8.11 



1892 ». 70 



1893 8.37 



1894 9. 04 



1895 j 8.84 



Per cent. 

 12.25 

 12. 00 

 12.01 

 12.04 

 12.00 

 12.21 

 10.90 

 10. 29 

 9.97 

 9. CO 

 9.77 

 9.32 

 8.53 

 8.24 

 8.10 

 8.05 

 8.0c 

 7.78 



Ammonia. 



Found. 



Guaran- j 

 tied. 



Potash 

 Found 



Per cent. , Per cent. ! Per cent. 



2.41 

 2.59 

 2.03 

 2. .59 



2.85 

 3.26 



2.29 

 2.51 

 2. 40 

 2.47 

 2.70 

 3.05 



Guaran- 

 tied. 



Per cent. 



The decomposition of organic matter and the humus compounds as related 

 to the culture of the soil, E. Woli.nv {Die Zersctzim;/ dir organi.'i(li<n Stoffe iiiid die 

 HiimnHhihhingeii mit IHicksirht auf die Bodenniltur. Ueidelherg : C. Winter, 1S97, pp. 

 479, fujK. .',2). — As stated in the preface, the attempt is made in this treatise to discuss 

 in a systematic manner the results of all imi)ortant investifjations on the processes 

 and products of tlie decomposition of organic matter with a view to enunciatiuj; the 

 fuudaiuental principles necessary to the rational manajjemeut and use of the many 



