Further remarks on the normal rate of growth of an individual, and its biochemical significance

Summary

• 1) In a previous paper, referred to above, I have shown from a variety of observations upon growth, that any particular cycle of growth obeys the formula logx/A−x= K(t−t ₁), wherex is the amount (in weight or volume) of growth which has been attained at timet, A is the total amount of growth attained during the cycle,K is a constant andt ₁ is the time at which the growth, due to the cycle, is half completed. It was pointed out that these relations are such as would be expected to hold good were growth the expression of an autocatalytic chemical reaction.

• 2) In the present paper these conclusions have been additionally tested upon a number of observations on the growth of certain plants and their constituents; the results are such as to additionally confirm the views expressed in my previous paper.