. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 94 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. mushroom-shaped. A passage has been cut for boats through the shal- low opening connecting the lagoon with the inner sound, which receives the drainao;e of the interior of the depressed basin. The elevated lime- stone blufts extend from the northern horn of the rim, along the coast line, towards the landing place on the north face of the island. To the. ilANCO, sLLN il;03I THE NORTHEAST. east of this, on the north shore, are fine blufts of elevated limestone, weath
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 94 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. mushroom-shaped. A passage has been cut for boats through the shal- low opening connecting the lagoon with the inner sound, which receives the drainao;e of the interior of the depressed basin. The elevated lime- stone blufts extend from the northern horn of the rim, along the coast line, towards the landing place on the north face of the island. To the. ilANCO, sLLN il;03I THE NORTHEAST. east of this, on the north shore, are fine blufts of elevated limestone, weathered into dome-like lamellar masses, with rounded masses and mushroom-shaped heads at the base (Plate 86). A little ftirther west, on the beach beyond the bluffs, the imderlying volcanic rocks crop out again, and from there south the negro-heads on the western reef flats are all of volcanic origin. The island of Mango is almost circular, about three miles in diameter, surrounded by a barrier reef, which passes into a fringing reef off" the northern coast near the landing, and off" a pai*t of the southeastern face of tlie island. The inner lagoon is very narrow, not more than a quarter of a mile in width, and also very shallow. Its great- <t depth is about two fathoms, aid it is further studded with legro-heads and coral patches, tlius protecting the lagoon to a certain extent from the invasion of the sea. The ridge of elevated 'I'ralliferous limestones on the west side of the island extends MANGO LANDING, VOLCANIC SUBSTRATUM. "^ fat aS thC firSt islet OU thc south face of Mango. There the central volcanic ridge wliich has raised the reef joins the western edge of thc rim of the island. Thc ridge runs in a soutlierly direction, at a. 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 Harvard Un
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
