The answer to this objection has, however, been supplied by the experiments of Driesch himself and of many others.
Driesch has found that a tropism underlies the arrangement of the skeleton in the pluteus larvae of the sea-urchin.
Driesch and v. Uexkll consider the Darwinian theory a failure.
Let us in imagination simplify Driesch's experiment, for the sake of gaining a clearer view of its meaning.
Again, when we ask what the modus operandi of this cause is, we get no reply either from Driesch or from any other neovitalist.
