ASPARAGINE AS A NUTRIENT FOR PHAENOGAMS. 



PLANTS IN AMMONIUM SUCCINATE. 



467 



Shaded branches are those newly developed. 

 Length of branches after 13 days. 



Asparagine 



cm. 

 j IO.O 

 ( 22.0 

 ( 9-0 



5.0 (with a flower.) 

 27.O 



) 



Ammonium succinate/" 

 cm. 

 I4.5 



( 6.0 ( ,. 

 1 I90 



J IO.O 

 1 23.5 



7.0 (w ith a flower 

 17.0 

 j 8.0 

 1 23.0 



103.5 



It thus appears that the total length of branches amounted to 

 50 % more with asparagine than with ammonium succinate. 



(1) The difference in chemical -tructure is explained by the following formulae : 

 CO-NH 2 CO-ONII, 



CH, 



I 



CH-NH 2 • 



COOH 

 Asparagine 



CH, 

 CH 2 



CO-0-NH 4 

 Ammonium succinate. 



