CD has omitted in all his works one of the most interesting causes of variation, domestic or wild – i.e., frightening of a pregnant animal; quotes case of eight-footed horse from a French translation of G. S. W. von Adler.

Thanks RFA for extracts.

Does not believe resemblances can be produced as RFA suggests, but would not deny that a strong mental shock may cause arrest of embryonic development and thus give rise to monstrosities.