. 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. 162 THREE CRUISES OF THE " BLAKE. species of Pelosina, a flask - shaped rhizojDod with thick Avails composed of globigerina ooze. Another type of the same group resembles a long-necked flask with branching calcareous pro- jections, but thickly covered outside with fragments
. 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. 162 THREE CRUISES OF THE " BLAKE. species of Pelosina, a flask - shaped rhizojDod with thick Avails composed of globigerina ooze. Another type of the same group resembles a long-necked flask with branching calcareous pro- jections, but thickly covered outside with fragments of sponge spicules. Large fragments of a mammillary mass of loosely. Fig. 490. â Sorosphaera confusa. ^^. (Brady.) crumbling character, Sorosj^hcera confusa (Fig. 490), are not iincommon from the Caribbean globigerina ooze. Hyperammina elongata (Figs. 491, 491 «), almost a cosmo- 'â ^P^^^^^^r^r-^-^ Fiff. 491. Fi^. 491 a. Hyperammina elongata. |^. (Goes.) politan species, builds a long, slender tube which attains a length of 15 mm. Sometimes it is constructed of siliceous sand and sponge spicules. It has been dredged in the North Atlantic to nearly 1,800 fathoms. The genus dates back to the Silurian. Rhahdartimma abyssorum, (Fig. 492), composed entirely of sili- ceous sand-grains, is one of the most tK AM Tji, 1 1 ⢠1, characteristic forms of the deeper-water tig. 492. â Rhabdammma abys- _ . n sormn. f (Brady.) rhizopods of the Caribbean, Gulf of. 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
