Before revision: ): Handbuch zur Geschichte der Naturwissenschaften und der Technik, Springer, Berlin 1908, S. 521 1872–1876: The first systematic deep sea exploration was conducted by the Challenger expedition on board the ship led by Charles Wyville Thomson.
After revision: ): Handbuch zur Geschichte der Naturwissenschaften und der Technik, Springer, Berlin 1908, S. 521 1872–1876: The first systematic deep sea exploration was conducted by the Challengerooogi boogi on board the ship led by Charles Wyville Thomson.