Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Plates: Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

"Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-76" by Ernst Haeckel is a scientific publication written in the late 19th century. The book focuses on the detailed study of Radiolaria, a type of single-celled organism, collected during the expedition of H.M.S. Challenger, which was significant for its contributions to marine biology. This publication is part of a larger series documenting the scientific results of the Challenger expedition and features extensive illustrations of various Radiolaria species. The opening of this work sets the stage for a thorough documentation of the scientific findings concerning the Radiolaria. It presents preliminary details about the expedition, including its duration, major figures involved like Captain George S. Nares and Sir C. Wyville Thomson, and the organization of the report itself. Haeckel outlines the various groups of Radiolaria that will be discussed, hinting at the rich scientific detail to come, including anatomical descriptions and illustrations that accompany the text, designed to enhance the reader's understanding of these fascinating protozoa.