When dogs want to be fed or walked or wake up or go to bed at a time that is at odds with what the new clock setting shows by ...

Prosser, C. L., and Young, J. Z., Biol. Bull., 73, 237 (1937).

But this theory was then known to be untenable. In this dilemma Mayer takes refuge in an idea which rests on a misconception of the undulatory theory of light, and he offers an explanation which ...