In the 3rd edition of 1861 Darwin acknowledged that others—like William Charles Wells in 1813, and Patrick Matthew in 1831—had proposed similar ideas, but had neither developed them nor presented them in notable scientific publications.
Ring edisi kaping 3 warsa 1861, Darwin nguningayang anak tiosan-sekadi William Charles Wells ring warsa 1813, miwah Patrick Matthew ring warsa 1831—sampun maosang pamineh sané pateh, sakéwanten nénten nglimbakang  utawi nyobiahang ring publikasi ilmiah sané kasub.