It is, however, often difficult to distinguish between rudimentary and nascent organs; for we can judge only by analogy whether a part is capable of further development, in which case alone it deserves to be called nascent.
Zaila da hala ere askotan aztarna-organoen eta hasikin-organoen arteko bereizketa egitea, zeren analogiaz besterik ezin ebatzi baitezakegu atalen bat gehiago garatzeko gai den, kasu honexetan soilik dei dakiokeelarik hasikin-organo.