1 Calories Burned For Walking: 4.6 km/h (13 minutes per km). 2  Calories Burned For Walking: 4 km/h (15 minutes per km). 3  Calories Burned For Walking: 3.15 km/h (19 minutes per km).
The first true hypodermic syringe was created by Alexander Wood in 1853. He modified a regular syringe, which at that time was used for treating birthmarks, by adding a needle. He then used this new device for introducing morphine into the skin of patients who suffered from sleeping disorders.
In 1842, Georgia physician Crawford Williamson Long became the first doctor to use ether as a general anesthetic during surgery, when he used it to remove a tumor from the neck of his patient James M. Venable.ong did not publish the results of his experiments until 1848, and by that time Boston dentist William T.G. Morton had already gained fame with the first publicly demonstrated use of ether as an effective surgical anesthetic.