One possibility was a lack of calcareous matter around the islands, but his main proposal, which FitzRoy had suggested to him, was that the seas were too cold.
یک احتمال نبود موادآهکی در اطراف جزایر بود، اما پیشنهاد اصلیش، که فیتزروی به او پیشنهاد داده بود، سرد بودن زیاد دریاها بود.