MAY 1911.] TAKEUCHI AND ITO.^NOTE ON THE INJU. 133 





Straw, g. 



Grains, 



0,050/0 CaCl2 + 0.05^^ MgCl2 



67.5 



61.4 



0.19^ CaCk+O.lo/o MgCk 



23.9 



28.6 



Check 



85.2 



61.0 



Thus a great depression is noticed on the increase of 0.05*^ 

 of both chlorides to 0.1^. 



In a second experiment with 0.3, 0.6 and O.Oo/ of both 

 chlorides, where upland rice was cultivated, partly sown and 

 partly planted as seedlings, the effect was a radical failure, 

 even the germination was prevented with 0.6 and 0.9 0/ of the 

 chlorides and no ear was produced with 0.3^. In a third 

 experiment sandculture was used. 4 kilo sand were manured 

 as follows, per pot : — 



0.5 g. Potassium sulphate, 



0.8 g. Ammonium nitrate, 



3.0 g. Secondary calcium phosphate, 



1.0 g. Ferric hydroxide. 



Two pots A received an addition of each 0.2 g. of chlorids 

 of calcium and of magnesium, and two other pots B received 

 0.4 g. of each of the chlorides. 



Ten seeds of upland rice were sown May 30 and the young 

 plants rendered to 3 of nesir]j equal size per pot, June 23. 

 The harvest October 13 yielded the following numbers, g. air- 

 dry : 





Straw 



Grains 



A 



36.7 



20.9 



B 



27.8 



12.7 



Thus the great depression by a moderate increase of both 

 chlorides is again demonstrated. It seems probable that 

 chlorine in any salt form interferes w4th certain important 

 physiological functions, as soon as its amount in a phaeno- 

 gamous plant increases beyond a certain limit. 



