Wolfgang M. Schleidt to Viktor Hamburger, February 25, 1965

request for reprints, discussion of rhythmical behavior in the chick embryo and many questions posed on the subjectCorrespondenc

Wolfgang M. Schleidt to Viktor Hamburger, August 23, 1965

Making future plans to meet up, discussion of zoology researchCorrespondenc

Wolfgang M. Schleidt to Viktor Hamburger, March 12, 1965

thank you for invitation to visit and sending of reprints, discussion of meeting and researchCorrespondenc

Lunar Influences on the Reproductive Cycle in Women

Several exogenous influences on the human female’s menstrual cycle length have recently been demonstrated. Previously, sexual behavior and pheromonal influences have been described. This report evaluates lunar cyclicity patterns. A relationship is demonstrated between the onset of menstruation, among women who have 29.5±1 day menstrual cycles, and the onset of full moon. Four separate prospectively gathered sets of data are presented from different years and seasons. It is demonstrated that these women tend to menstruate in the full of the moon with a diminishing likelihood of menses onset as distance from full moon increases