Darwin gives his definition of "highness" and "lowness" as "morphological differentiation" from a common embryo or archetype. Hooker's view, with which Darwin agrees when it can be applied, is the same as Milne-Edwards', i.e., the physiological division of labour. There is little agreement among zoologists and Darwin admits his own lack of clarity.
Request reproduction rights to this image
Add this image / page to your personal bookmarks for quick access later.
Download original metadata for this document.
This image has the following copyright:
Do you want to download this image?
This metadata has the following copyright:
Do you want to download metadata for this document?