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.
The first widespread use of powerful stimulants began in the 1880s with the introduction of pure cocaine to the American market. Cocaine was not discovered in that decade. Its isolation from coca leaves took place 20 years earlier, but it was in the 1880s when substantial production of cocaine got underway.