1895.] into the Measurable Characteristics of Plants, $c. 373 



8'15 being the " modulus " of the system of ordinates, determined 

 from their moments about the axis of g. The coincidence between 

 the two, rough as it is, is surely more than accidental ! 



FIG. 5. Sum of three Muscle-curves from Cyboulski and Zanietowski's paper. 



Each ordinate represents the sum of three muscle -con tractions in milli- 

 metres : abscissse represent stimulus applied to the nerve, expressed in ergs 

 x 10~ 7 , and reckoned from the close of the subliminal period. 



The most interesting relation to be investigated in the light of this 

 result would undoubtedly be the relation between sensation and 

 stimulus in man ; but existing data seem too imperfect to give any 



