On tHe Maiiurial Effect of Calcium Cyanamitl*-. 



97 



It is therefore clear that lime-nitrogen acted better when the phosphatic 

 manure was superphosphate (C) than when it was sodium phosphate (D) ; in 

 other words, the nev.tr al mixture (C) ivas better than the alkaline 

 mixture {D). The manuring effect of lime-nitrogen in C was here equal 

 to that of ammonium sulphate in B, when this was applied in conjunction 

 with sodium phosphate. 



II. Experiment with Brassica Chinensis. 



The soil was an alluvial loam, almost free of humus. Eighteen 

 porcelain pots (area = 1/200,000 ha.) were filled each with 14.27 Icilo. of the 

 fresh soil, and manured^^ as follows, g : 



Each pot contained therefore 2.478 g. N, 0.89 g. PaOj, 2.473 g- KgO, 

 0.78 g. NaaO, and 7.493 g. CaO. 



Twenty seeds of Brassica chinensis were sown per pot Sept. 29, After 

 two weeks, the plants were reduced to seven per pot of about equal size. 

 The length and number of leaves on Nov. 7 were as follows : 



i). To the corresponding pots, the lime-nitrogen, gypsum, and lime-stone were applied Sept. 7, 

 the phosphatic manures a week later, and the other manures were applied still a week later, in 

 solution. 



