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Auguste Laurent

Died 23 Apr 1853 at age 45 (born 14 Nov 1807). French chemist who developed organic chemistry as a distinct science. For a while, he assisted Jean Dumas, and extended his work, understanding organic compounds as derivatives of hydrocarbon molecules. In crystallography he was influenced by René-Just Haüy. Laurent recognised that carbon atoms formed bonds based on a pyramid structure. Furthermore, against the opinion of many peers, he rejected the idea held by Jöns Berzelius that even organic molecules were formed from positively and negatively charged entities. Laurent showed (1836) that a supposedly positive-charge hydrogen atom could be replaced by a supposedly negative-charge chlorine atom. He recognised families of organic compounds with characteristic groups. He died in middle age from tuberculosis.«

A man walked into a doctor's...

A man walked into a doctor's office and the receptionist asked him what he had. He replied, "I got shingles."
She said, "Fill out this form and supply your name, address, medical insurance number. When you're done, please take a seat."
Fifteen minutes later a nurse's aide came out and asked him what he had. He said, "I got shingles."
So she took down his height, weight, and complete medical history, then said, "Change into this gown and wait in the examining room."
A half hour later a nurse came in and asked him what he had. He said, "I got shingles."
So she gave him a blood test, a blood pressure test, an electrocardiogram, and told him to wait for the doctor.
An hour later the doctor came in and asked him what he had. He said, "Shingles."
The doctor gave him a full-cavity examination, and then said, "I just checked you out thoroughly, and I can't find shingles anywhere. " The man replied, "They're outside in the truck. Where do you want them?"
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