THE author took this structure as an illustration in reply to those who are not yet satisfied that structures exist which are useless to the animal body containing them. Referring first to the case of ...

Metaphorically, building bridges equates to creating new opportunities, connections, and paths. The first bridges likely formed naturally with logs falling across rivers and natural depressions, ...

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I MUST claim the opportunity of reply to the article which appeared in your number of October 16 (vol. viii p. 509), entitled “On the Appendix Vermiformis and the Evolution Hypothesis,” which the ...