On artificial modification of light reactions and the influence of electrolytes on phototaxis

Abstract

On the evidence offcred this conclusion was since shown t o have been drawn nitliout cogent reason (ISess, Ewald) and the antithesis of 'intensity' and 'dirertion' not t o be justified in this form (Ewald, Mast) though the underlying idea was a fruitful one and ft step forward.