The scientific portion of the French original is not without a few errors, which the translator, with the kind assistance of Mr. Cameron of H. M. Geological Survey, has ventured to point out and correct.
法文原文的科学部分并非没有一些错误，译者在 H. M. 地质调查局的卡梅伦先生的帮助下，大胆地指出并纠正了这些错误。