. A contribution to American thalassography; three cruises of the United States Coast and geodetic survey steamer "Blake," in the Gulf of Mexico, in the Caribbean Sea, and along the Atlantic coast of the United States, from 1877 to 1800. Blake (Ship); Marine animals -- Atlantic Ocean; Marine sediments; Ocean. 138 THREE CRUISES OF THE " BLAKE. HYDROCORALLIN^. To the hydroids we should add the account of the Hydro- corallinse, which until recently were supposed to be true corals. Professor Agassiz, however, observed the animal of Millepora, and traced its acalephian affinity. The
. A contribution to American thalassography; three cruises of the United States Coast and geodetic survey steamer "Blake," in the Gulf of Mexico, in the Caribbean Sea, and along the Atlantic coast of the United States, from 1877 to 1800. Blake (Ship); Marine animals -- Atlantic Ocean; Marine sediments; Ocean. 138 THREE CRUISES OF THE " BLAKE. HYDROCORALLIN^. To the hydroids we should add the account of the Hydro- corallinse, which until recently were supposed to be true corals. Professor Agassiz, however, observed the animal of Millepora, and traced its acalephian affinity. The polyps of Millepora are most difficult to observe (Fig. 441), not only on account of their small size, but also from their extreme sensitiveness to contact with air. Agassiz's observations have been confirmed by several investigators, especially by Moseley, who has greatly increased our knowledge of the group, and has in addition shown that other families of cor- als, the Stylasteridse and Helio- poridae, belong with the Millepo- ridse to a natural group for which he has proposed the name Hydrocorallinse. They are all characterized by having reproduc- tive, prehensile, and digestive zoids composing the community (Fig. 442), reminding us thus somewhat of the Fig. 441. — Animal of Millepora. (Agassiz.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agassiz, Alexander, 1835-1910; U. S. Coast and Geodetic Survey. Boston Houghton, Mifflin
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectocean, bookyear1888
