POTENCY OF MELANOPHORE HORMONE TOWARDS THE REGENERATION OF VISUAL PURPLE

Abstract

1. Melanophore hormone (MH) has the power of accelerating regeneration of visual purple in the retina when it is taken in the body.
2. MH also makes visual purple regenerate in the retina of eye-cups in the absence of circulating blood.
3. MH also has the power to re-synthesize visual purple from photo-decomposed materials in solution even when the visual purple is in a state of decomposition due to “Nachbleichung.”
4. Some existing facts on the role of pigment epithelium in visual purple regeneration and of scotopic vision in the lower animal kingdom and human being were discussed from the view-point of this potency of MH.