He set off again and on 1 October searching the cliffs of the Carcarañá River found "an enormous gnawing tooth" then in a cliff of the Paraná River saw "two great groups of immense bones" which were too soft to collect but a tooth fragment identified them as mastodons.
Partiron de novo e o 1 de outubro examinando os cantís do río Carcarañá encontrou "un enorme dente rillador" despois nun cantil do río Paraná viu "dos grandes grupos de ósos inmensos" que eran demasiado moles para recollelos pero un fragmento de dente identificounos como de mastodontes.