Note 105 — THE INDIVIDUAL ORGANISM WITH REGARD TO FORM AND METABOLISM (continued 3)

To a physiological friend of mine I owe the suggestion that it is the permanently functioning tissues which stand hunger better than the others, at least if the sexual cells might be regarded as capable of a sécrétion interne in all cases. Then the adaptations in the state of hunger might be said to be reduced in some degree to “functional adaptation.” But it must remain an open question, it seems to me, whether such a view may indeed hold in the face of the facts observed in Planaria and infusorians.