PLYMOUTH HARBOR. This note will modify our remarks on p. 78, Vol. II. Champlain entered this harbor on the 18th of July, 1605, and, lingering but a single day, sailed out of it on the 19th. He named it _Port St. Louis_, or _Port du Cap St. Louis_.--_Vide antea_, pp. 53, 54; Vol. II., pp. 76-78. As the fruit of his brief stay in the harbor of Plymouth, he made an outline sketch of the bay which preserves most of its important features. He delineates what is now called on our Coast Survey maps _Long Beach_ and _Duxbury Beach_. At the southern extremity of the latter is the headland known as the _Gurnet_. Within the bay he figures two islands, of which he speaks also in the text. These two islands are mentioned in Mourt's Relation, printed in 1622.--_Vide Dexter's ed._ p. 60. They are also figured on an old map of the date of 1616, found by J. R. Brodhead in the Royal Archives at the Hague; likewise on a map by Lucini, without date, but, as it has Boston on it, it must have been executed after 1630. These maps may be found in _Doc. His. of the State of New York_, Vol. I.; _Documents relating to the Colonial His. of the State of New York_, Vol. I., p. 13. The reader will find these islands likewise indicated on the map of William Wood, entitled _The South part of New-England, as it is Planted this yeare, 1634_.--_Vide New England Prospect_, Prince Society ed. They appear also on Blaskowitz's "Plan of Plimouth," 1774.--_Vide Changes in the Harbor of Plymouth_, by Prof. Henry Mitchell, Chief of Physical Hydrography, U. S. Coast Survey, Report of 1876, Appendix No. 9. In the collections of the Mass. Historical Society for 1793, Vol. II., in an article entitled _A Topographical Description of Duxborough_, but without the author's name, the writer speaks of two pleasant islands within the harbor, and adds that Saquish was joined to the Gurnet by a narrow piece of land, but for several years the water had made its way across and _insulated_ it. From the early maps to which we have referred, and the foregoing citations, it appears that there were two islands in the harbor of Plymouth from the time of Champlain till about the beginning of the present century. A careful collation of Champlain's map of the harbor with the recent Coast Survey Charts will render it evident that one of these islands thus figured by Champlain, and by others later, is Saquish Head; that since his time a sand-bank has been thrown up and now become permanent, connecting it with the Gurnet by what is now called Saquish Neck. Prof. Mitchell, in the work already cited, reports that there are now four fathoms less of water in the deeper portion of the roadstead than when Champlain explored the harbor in 1605. There must, therefore, have been an enormous deposit of sand to produce this result, and this accounts for the neck of sand which has been thrown up and become fixed or permanent, now connecting Saquish Head with the Gurnet.