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.
French physician Dominique Anel is usually credited with the invention of the kind of syringe used today. Anel was a surgeon in the army of French King Louis XIV (1638-1715). Anel created his instrument to clean wounds with suction. The first true hypodermic syringe was created by French physician Charles Pravaz in 1853. Made entirely of silver, this syringe held one cubic centimeter of liquid. Around the same time, Scotsman Alexander Wood devised a subcutaneous injection method.