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"X" Marks the Girl; "Y" Marks the Boy As noted in the preceding chapter, it has
been suspected for a long time that the seminal fluid of the male plays a crucial
role in both the fertilization of the egg and the determination of the sex of the ...
Still, even the sperm deposited near the cervix have to beat their tails furiously to
get through the sticky swirl of fluid that is issuing out of the cervix. Those that do
get inside the womb are still fighting adverse currents as they struggle toward the
To test this hypothesis, he placed sperm in transparent tubes filled with cervical
and vaginal fluids of varying degrees of acidity and alkalinity, such as naturally
exist in the female reproductive tract. He found that when the fluids were most ...
What people are saying - Write a review
LibraryThing ReviewUser Review - ladytaluka - LibraryThing
I read this whole book from cover to cover. That being said, I thought a lot of it was a waste of my time. The author kept saying why his method was better than the other methods out there for sex ... Read full review
LibraryThing ReviewUser Review - lizvero - LibraryThing
very interesting, I use some of the tecniques explain and combine with others and work, Read full review
Why Should We Do It? Why Shouldnt
Who Does It? What Are the Results?
THE EMERGENCE OF A SCIENTIFIC
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