After three days at Bahía Blanca he grew tired of waiting for Beagle and on 21 August revisited Punta Alta where he reviewed the geology of the site in light of his new knowledge, wondering if the bones were older than the seashells.
Despois de pasar tres días en Bahía Blanca cansou de esperar polo Beagle e o 21 de agosto volveu visitar Punta Alta onde revisou a xeoloxía do lugar á luz dos seus novos coecementos, preguntándose se os ósos eran máis antigos que as cunchas.