26 



and tlie badly-fed plants hâve been calculated as well for 

 the médian as for the variability-coefi&cient. This différence, 

 divided by the value for the well-fed plants and consequently 

 expressed as a fraction of this value, I vs^ill cali the 

 sensibility -coefficient of the médian or the variability. This 

 coefl&cient is given in the table under the two values. 

 A -f- sign for the sensibility-coefïicient means that the 

 value is greatest with the well-fed plants, a — sign that 

 with thèse the value is smallest. 



I 



