A woman took her dog to the vet. She said, "I think my dog is dead". The doctor laid the dog on the table and reached down and took a cat out of a box. The cat walked all over the dog and the dog didn't move. "Yes, your dog is dead," says the doctor.
"How much do I owe you?" the lady asks.
"$345," says the doctor.
"$345!!?" the lady asks.
"Yes. $45 for the office visit and $300 for the cat scan."
Julius Lothar MeyerBorn 19 Aug 1830; died 11 Apr 1895 at age 64. (Julius) Lothar Meyer was a German chemist who discovered the Periodic Law, independently of Dmitry Mendeleyev, at about the same time (1869). However, he did not develop the periodic classification of the chemical elements as thoroughly as Mendeleyev. Meyer trained originally in medicine and chemistry. He examined the effect of carbon monoxide on blood. In 1879, Meyer compared atomic volume to atomic weight. Plotted on a graph, the curve showed the periodicity of the elements. He also established the concept of valency by indicating that a given element combined with a characteristic number of hydrogen atoms, and coined the terms like univalent, bivalent, and trivalent, based on that number.« |
