Frog legs experiments

For about 2000 years until 1799 the knowledge of these ancient cultures was obviously forgotten, as Volta based his research on more recent knowledge, on Galvanis frog leg experiment. With his work the scientific side of our branch was introduced. 

Galvanism -> Galvanis investigation on animal electricity inspired - Volta s experiments which eventually led to the birth of electrochemistry, and the production of electric current. The most spectacular part of Galvanis experiment was the contraction of frog legs which... 

The experiment involved two groups of tadpoles of red-legged frogs. They were placed in an aquarium partitioned by a screen that allowed water to flow but blocked communications by sight and sound. When a wooden heron (a bird that preys on tadpoles) threatened the tadpoles in the one compartment, those on the other side moved away from the partition and ducked under a shelter. The... 

In this experiment, a procedure is given for the preparation of a local anesfhefic, benzocaine, by fhe direcf esferification of p-aminobenzoic acid wifh ethanol. At the instructor s option, you may test the prepared anesthetic on a frog s leg muscle. 

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