COCONUT PLANTER'S MANUAL. 133 



Thus was the twenty-year investigation of Lipman and Blair con- 

 firmed in every particular by the ten-year trial of Voorhees. But this 

 is still by no means all. 



Dr. Paul Wagner, working on this same problem in Darmstadt and 

 other places in Germany, obtained the following results; — 



Nitrogen 

 Manure. recovered in Crop. 



Nitrate Nitrogen. (As in Nitrate of Soda) ... 62% 



Ammonia ,, (As in Ammonium Sulphate) ... 44% 



Organic ,, (As in Dried Blood) ... 40% 



Here is a different scientist in a different country obtaining exactly 

 the same results as Lipman, Blair and Voorhees. And it would be very 

 easy to go on piling up proof after proof in further substantiation of the 

 results already recorded, but let it suffice to quote one more : — 



Dr. G. Smets of Liege, Belgium, taking Nitrate of Soda as a basis, 

 established, after many years' investigation, the following comparative 

 table shewing the relative amounts of nitrogen taken up by the crop 

 from the different manures : — 



So much tor the scientific aspect of this cpuestion ! In every single 

 investigation ever carried out Nitrate of Soda has invariably occupied 

 the first and ioremost position. 



It should be observed that the above trials were carried out by 

 scientists of such world-wide renown and unassailable integrity that it 

 would be sheer folly to attempt to question their finding, more parti- 

 cularly as each result is confirmed by the independent researches of the 

 others. 



Moreover the trials were carried out on a multitude of different 

 crops, in many different countries and under widely varying conditions. 

 Each fertiliser was treated in exactly the same way, each had exactly tho 

 same chance of being absorbed by the roots of the crop or of being washed 

 out of the soil by rain, and in every single instance Nitrate of Soda 

 proved itself go be approximately 25 per cent, superior to the next best 

 fertiliser I 



