Rhythm, it is scarcely necessary to remark, is far from characterizing sexual activity alone.
"Studies in the Psychology of Sex, Volume 1 (of 6)" by Havelock Ellis
The connection between pigmentation and sexual activity is very ancient.
"Studies in the Psychology of Sex, Volume 5 (of 6)" by Havelock Ellis
According to social tradition, sexual activity (at least in the case of women) is to be exercised primarily for the reproduction of the group.
"Taboo and Genetics" by Melvin Moses Knight, Iva Lowther Peters, and Phyllis Mary Blanchard
It is only among the higher and more active animals that sexual differences of colour acquire any prominence.
"Darwinism (1889)" by Alfred Russel Wallace
Another part of the infantile sexual manifestations escapes this utilization and may manifest itself as sexual activity.
"Three Contributions to the Theory of Sex" by Sigmund Freud
Sexual activity, we see, is not merely a bald propagative act, nor, when propagation is put aside, is it merely the relief of distended vessels.
"Little Essays of Love and Virtue" by Havelock Ellis
It must be remembered in this connection that fecundity and sexual activity are not convertible terms.
"The Fertility of the Unfit" by William Allan Chapple
Eyes and ears want to gather sexual activity and knowledge.
"Fantasia of the Unconscious" by D. H. Lawrence
It is possible for the father, too, to weaken his vitality by excessive sexual activity.
"The Good Housekeeping Marriage Book" by Various
It was assumed above that the activity of the sexual glands was comparable with that of muscles.
"The Biology, Physiology and Sociology of Reproduction" by Winfield S. Hall
HPV Vaccine Doesn't Encourage Risky Sexual Activity .
HPV Vaccine Doesn't Encourage Risky Sexual Activity CDC Survey Shows No Evidence That Vaccine Encourages Risk Taking Among Adolescents and Young Women WebMD Medical News By Salynn Boyles Reviewed.
Court tackles ' sexual activity ' meaning in statute.
Abstinence-only education cuts teens' sexual activity in study.
Tufts University has taken a bold step toward regulating sexual activity in dorm rooms.
Girls Vaccinated For HPV Not More Likely To Be Sexually Active.
Do high temperatures contribute to an increase in sexual activity.
Don't encourage young girls to be sexually active .
Now, a new lawsuit accuses Clash of luring a teenage boy to New York from Miami in early 1996 for the purpose of sexual activity.
Q I'm a 23-year-old female, sexually active for seven years, and I can't reach climax .
Treasure Coast High School band director facing charges of sexual activity with minors.
Only 22% of sexually active high school students have been tested.
Don't encourage young girls to be sexually active.
A Guilford man was arrested on Wednesday after police say he used a computer to entice a child to engage in sexual activity.
Has been arrested for allegedly trying to entice a 17-year-old boy into sexual activity.
Removing the confound of time in investigating the relation of serial behaviours: testosterone, prolactin and the transition from sexual to parental activity in male America kestrels.
Post-hatching parental care behaviour and hormonal status in a precocial bird
The population of the susceptible individuals, of size St , at time t > 0, consists of the sexually active seronegative individuals.
HIV with contact-tracing: a case study in Approximate Bayesian Computation