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Nguyễn Tuấn

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MATH PUZZLE: Can you replace the question mark with a number?

John Mayow

Born 24 May 1640; died Sep 1679 . English physiologist and chemist who, about a hundred years before Joseph Priestley and Antoine-Laurent Lavoisier, identified spiritus nitroaereus (oxygen) as a distinct atmospheric entity. He further recognized the role of oxygen in the combustion of metals. His medical writings include a remarkably correct anatomical description of respiration.[Date of birth 24 May 1640 given by EB and Chambers Dict. of Sci., but DSB gives Dec 1641. Date of death Sep 1679 given by Chambers and DSB but EB gives Oct 1679.]

A talk on sex

A minister gave a talk to the Lions Club on sex. When he got home, he couldn't tell his wife that he had spoken on sex, so he said he had discussed horseback riding with the members.

A few days later, she ran into some men at the shopping center and they complimented her on the speech her husband had made.

She said, "Yes, I heard. I was surprised about the subject matter, as he's only tried it twice. The first time he got so sore he could hardly walk, and the second time he fell off."

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