This has, therefore, become the guiding principle of the admirable zoological system which was originated by the French in this century, and it is most completely established in comparative anatomy as l'unité de plan, l'uniformité de l'élément anatomique.
hori da, beraz, mende honetan frantsesengandik sortu den sistema zoologiko bikaina, eta erarik osoenean anatomia erkatuan gisa aipatzen dena.