“But if the above-mentioned animals, either aquatic or amphibious, recover their legs, even when kept on dry ground, how comes it to pass, that other land animals, at least such as are commonly accounted perfect, and are better known to us, are not endued with the same power? Is it to be hoped they may acquire them by some useful dispositions? and should the flattering expectation of obtaining this advantage for ourselves be considered entirely as chimerical?”


Lazzaro Spallanzani, 1768



Photo by Adam Glanzman/Northeastern University