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.
An illustration of the first use of ether as an anesthetic in 1846 by the dental surgeon W.T.G. Morton. Photo: Wikimedia Commons. Recalling these lessons during the summer of 1846, Morton purchased bottles of the stuff from his local chemist and began exposing himself and a menagerie of pets to ether fumes.n illustration of the first use of ether as an anesthetic in 1846 by the dental surgeon W.T.G. Morton. Photo: Wikimedia Commons. Recalling these lessons during the summer of 1846, Morton purchased bottles of the stuff from his local chemist and began exposing himself and a menagerie of pets to ether fumes.