Alfred Wegener,
The Origin of Continents and Oceans
(1924)
“ Geologically speaking, sealing-wax is thus of such mobility at ordinary temperatures that we cannot use it at all for the explanation of geological phenomena. If the sima has a viscosity coefficient 10,000 times as large as that of sealing-wax, then a month for the sealing-wax is equivalent to a thousand years for the sima. And this is a period of time which corresponds more with geological changes. We need not therefore draw the conclusion from Schweydar’s figures that the earth, because it has the same viscosity as steel, behaves as if it were a rigid body. ”
