My reasons for doubting whether natural species have changed as abruptly as have occasionally domestic races, and for entirely disbelieving that they have changed in the wonderful manner indicated by Mr. Mivart, are as follows.
Espezie naturalak etxe-arrazak noizbehinka bezain bat-batean aldatu ote diren dudatan jartzeko eta Mivartek adieraziriko era harrigarrian aldatu direnik ez sinesteko ditudan arrazoiak ondoren datozenak dira.