. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 130 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. Matanzas by a deep gorge. This gorge must at one time have been the entrance to a flask-shaped harbor very similar to such harbors as Nipe, Padre, and the like, which once opened through this canon into the Bay of Matanzas, but the bottom of which has been elevated above the present level of the bay. We had an excellent opportunity, on going out of Matanzas on our way to Havana, to observe the plainly marked first and second ter- races inside of Sabanilla Point, j
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 130 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. Matanzas by a deep gorge. This gorge must at one time have been the entrance to a flask-shaped harbor very similar to such harbors as Nipe, Padre, and the like, which once opened through this canon into the Bay of Matanzas, but the bottom of which has been elevated above the present level of the bay. We had an excellent opportunity, on going out of Matanzas on our way to Havana, to observe the plainly marked first and second ter- races inside of Sabanilla Point, just beyond the pilot station. Before reaching Guanos Point the base of the second terrace is seen to be dis-. TERRACES, GUANOS POINT, MATANZAS. tinctly undermined, the limestone sloping vei-y gently to the low bluff of the first terrace. After passing Guanos Point the sea has encroached upon the first and second terraces, leaving vertical bluffs which probably represent the summit of the third terrace. The fourth terrace may be seen indistinctly to the east of Guanos Point, at a height of from five hundred to six hundred feet. In the background there are indications of the fifth terrace. Matanzas to Havana. Plate I. and Plates XLIV. to On leaving Matanzas we come upon a stretch of coast line which is in marked contrast with the configuration of the island to the east- ward. The line of shore, protected by outlying cays, which extends from Cardenas to Nuevitas, is now' replaced by a nearly continuous vertical bluff, representing probably the summit of the third terrace, which extends to about opposite the Managua Paps. This low shore line belt of the third terrace is cut through by valleys following the course of the small rivers which empty on this part of the north shore between Matanzas and Havana ; as, for instance, the Rio Canasi, the Santa Cruz valley, and the Jaruco River. An examination of some of the cuts made by the rivers on this part of the coast might throw i
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