Nor is it consistent with itself: thus the boa-constrictor has rudiments of hind limbs and of a pelvis, and if it be said that these bones have been retained "to complete the scheme of nature," why, as Professor Weismann asks, have they not been retained by other snakes, which do not possess even a vestige of these same bones?
Eta ez dator bat, gainera, baiezten duenarekin berarekin ere; esate baterako, Boa constrictor-ak atzeko hanken eta pelbisaren aztarnak ditu, eta hezurrok "Naturaren proiektua betetzeko" mantendu izan direla esaten baldin bada, zer dela-eta ez dira kontserbatu, Weismann irakasleak galdetzen duen moduan, hezur horien aztarnarik ere ez duten beste suge batzuengan?