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KINOSHITA ; NITROGEN ASSIMILATION. 
four days’ standing in diffused day-light, the whole plants were 
subjected to nitrogen determination, with the following result :— 
Plants in water, amm. nitr. sod. nitr. 
Total nitrogen 4.13 4.23 4.15 
Nitrogen in asparagine 0.38 0.73 0.24 
From this it is evident that ammonium salts are transform¬ 
ed into asparagine, while nitrates can be stored up as such. The 
difference would have been found still greater in the latter case 
had only roots and stems been tested, and I think it safe to 
assert that asparagine is the form in which the excess of nitrogen, 
originally in the ammonium salts, is stored up in the plants, 
although I regard these investigations merely as a preliminary 
step to a longer series I intend to carry out in order to decide 
whether my conclusion can be substantiated. 
