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End Notes: The Developement of the Steamship - 1887

Note 519-A: Report of Lecture in the Liverpool Albion, delivered in Liverpool, December, 1835.

Note 520-A: The account given of the Savannah is condensed from Admiral Preble's Notes for a History of Steam Navigation.

Note 535-A: Daniel Dod, an American citizen, was granted a patent November 29, 1811, in which he states : " I form the condenser of a pipe or number of pipes condensed together; and condense the steam by immersing the pipes in cold water, either with or without an injection of water."

The present surface condenser consists essentially of a great number of small brass tubes, about three-fourths of on inch in diameter, passing through an air-tight chamber. The exhaust steam from the cylinders enters the chamber, and cold water is constantly pumped through the tubes. The steam is condensed by contact with the cold tubes, and the water thus obtained pumped back to the boiler in a fresh state, instead of being mixed with about thirty times its weight of salt water, as in the old jet condenser. Practice varies, the steam sometimes being passed through the tubes and the water around them.

Note 535-B:The Naval Chronicle of 1818, vol. xxxix.. p. 277, speaking of the steamers on the Clyde, says "No serious accident has occurred since their introduction, which is more than two years. The secret of security consists in using large steam-engines of great power and small pressure. If the boilers of cast-iron should in any part give way, a piece of cloth is firmly wedged in the hole, and the vessel proceeds without any danger or inconvenience to the passengers."

Note 537-A: Mr. W. John, in a paper read before the Naval Architects, in June, 1S86.

Note 541-A: The figures for these three posts are exclusive of the tonnage built on foreign account.

Cmdr. F. E. Chadwick, USN, "The Development of the Steamship, and the Liverpool Exhibition of 1886," in Scribner's Magazine, Vol. 1, No. 5, May 1887, p.515-543.

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The Folks Behind the GG Archives

The GG Archives is the work and passion of two people, Paul Gjenvick, a professional archivist, and Evelyne Gjenvick, a curator. Paul earned a Masters of Archival Studies - a terminal degree from Clayton State University in Georgia, where he studied under renowned archivist Richard Pearce-Moses. Our research into the RMS Laconia and SS Bergensfjord, the ships that brought two members of the Gjønvik family from Norway to the United States in the early 20th century, has helped us design our site for other genealogists. The extent of original materials at the GG Archives can be very beneficial when researching your family's migration from Europe.