Download or read book An Account of the Rise of Navigation written by Ralph Hamilton Curtiss and published by Rarebooksclub.com. This book was released on 2013-09 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ...are modified frond segments or highly developed indusia. Only a single megaspore reaches maturity in each megasporangium. The Salviniaceae contain the genera Azolla and Salvinia with between 15 and 20 existing species of the warmer regions and the leaves of the latter genus not appreciably different from those of the existing species are found throughout the Tertiary-period. The Marsiliaceae consist of three genera--the monotypic Brazilian Regnellidium, Pilularia with about six species and Marsilia with over 50 widely distributed existing species. The last has been found fossil as early as the Upper Cretaceous, but is rare and more or less uncertain in the fossil state. The extinct genus Sagenopteris is based for the most part on groups of two to five large asymmetrical reticulate veined pinnules borne digitately at the apex of-a long and rather stout stipe and found as impressions in the late Triassic' (Keuper and Rhaetic) very common in the late Triassic and basal Jurassic (Liassic) with seven or eight species rather widespread during the Lower Cretaceous and surviving in one or two Upper Cretaceous species. Associated with some of the older forms are oval or spherical bodies thought to represent sporocarps. The remainder of the living and fossil ferns, excepting certain illy understood extinct types, such as the Devonian and Lower Carboniferous Archaeopteridae and the Mesozoic Tempskya, may be grouped together in the Leptosporangiate or Eufilicalean order Polypodiales, although there is some evidence for recognizing the Gleichenialles and Matoniales as independent orders. The Polypodiales embrace the great majority of living ferns and include the most specialized and abundant families. Without taking the space to give their...

Download or read book An Account of the Rise of Navigation written by Ralph Hamilton Curtiss and published by . This book was released on 1920 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Navigation written by William W. Bates and published by . This book was released on 2016-06-21 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from American Navigation: The Political History of Its Rise and Ruin and the Proper Means for Its Encouragement As the public understands the case, we formerly had an adequate marine of the best character known to the sea; but how we came to lose it, what must be done that it may be rebuilt, appear to be questions so vexed as to be incapable of settlement. What could better elucidate and help to solve these questions than the study Of the intelligent discussions Of navigation problems by our early Congresses Feeling this to be the case, the pages Of this work contain reports of all the early shipping debates, given in the words Of the members themselves. Pertinent extracts from messages of the Presidents are also given. The change of policy after the peace of 1815, by which we gradually discontinued our original encouragement to Naviga tion, and committed this interest to its fate from Open competition with the directly or indirectly fostered shipping Of other nations, will be found fully explained. The change was involuntary, and grew out of our unfortunate relations with Great Britain. A convention entered into with that nation, and similar agree ments made with others afterward, practically binding us to do nothing to save our navigation and our commerce from capture and confiscation by rivals, originated our impotency at sea. It is attempted to make this clear and to demonstrate, also, that the true way of restoration is by the means provided in the Constitution not by any system of gifts by Government, but by wise and just regulations Of commerce. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book An Historical Account of the Rise Progress and Present State of the Canal Navigation in Pennsylvania With an Appendix Containing Abstracts of the written by Schuylkill And Susquehanna Navigation and published by Palala Press. This book was released on 2018-02-24 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Historical Account of the Rise Progress and Present State of the Canal Navigation in Pennsylvania With an Appendix Containing Abstracts of the Acts of the Legislature Since the Year 1790 and Their Grants of Money for Improving Roads and Navigable Wat written by Schuylkill and published by . This book was released on 1795 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quo Vadis Evolution of Modern Navigation written by F. G. Major and published by Springer Science & Business Media. This book was released on 2013-10-16 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quo Vadis: Evolution of Modern Navigation presents an intelligent and intelligible account of the essential principles underlying the design of satellite navigational systems—with introductory chapters placing them in context with the early development of navigational methods. The material is organized roughly as follows: the first third of the book deals with navigation in the natural world, the early history of navigation, navigating by the stars, precise mechanical chronometers for the determination of longitude at sea, and the development of precise quartz controlled clocks. Then, the reader is introduced to quantum ideas as a lead in to a discussion of microwave and optical interactions with atoms, atomic clocks, laser gyrocompasses, and time based navigation. The final third of the book deals with satellite-based systems, including orbit theory, early satellite navigation systems, and a detailed treatment of the Global Positioning System (GPS). Intended for non-specialists with some knowledge of physics or engineering at the college level, this book covers in an intuitive manner a broad range of topics relevant to the evolution of surface and space navigation, with minimum mathematical formalism.

Download or read book The Whole History of Navigation from Its Original to this Time 1704 written by John Locke and published by . This book was released on 1823 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Development of Transportation in Modern England written by William T. Jackman and published by . This book was released on 1916 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An historical account of the rise and present state of the Canal Navigation in Pennsylvania With an appendix to which is annexed an explanatory map written by and published by . This book was released on 1795 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of the Board of Regents of the Smithsonian Institution written by Smithsonian Institution and published by . This book was released on 1920 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Brief Account of the Rise and Early Progress of Steam Navigation written by and published by . This book was released on 1840 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of the Board of Regents of the Smithsonian Institution written by Smithsonian Institution. Board of Regents and published by . This book was released on 1920 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book You Are Here written by Hiawatha Bray and published by Basic Books. This book was released on 2014-04-01 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The story of the rise of modern navigation technology, from radio location to GPS-and the consequent decline of privacy What does it mean to never get lost? You Are Here examines the rise of our technologically aided era of navigational omniscience-or how we came to know exactly where we are at all times. In a sweeping history of the development of location technology in the past century, Bray shows how radio signals created to carry telegraph messages were transformed into invisible beacons to guide ships and how a set of rapidly-spinning wheels steered submarines beneath the polar ice cap. But while most of these technologies were developed for and by the military, they are now ubiquitous in our everyday lives. Our phones are now smart enough to pinpoint our presence to within a few feet-and nosy enough to share that information with governments and corporations. Filled with tales of scientists and astronauts, inventors and entrepreneurs, You Are Here tells the story of how humankind ingeniously solved one of its oldest and toughest problems-only to herald a new era in which it's impossible to hide.

Download or read book The History of Celestial Navigation written by P. Kenneth Seidelmann and published by Springer Nature. This book was released on 2020-06-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume charts the history of celestial navigation over the course of five centuries. Written by a group of historians and scientists, it analyzes how competing navigation systems, technologies, and institutions emerged and developed, with a focus on the major players in the US and the UK. The history covers the founding of the Royal Observatory; the first printing of a Nautical Almanac; the founding of the US and UK Nautical Almanac Offices; the creation of international standards for reference systems and astronomical constants; and the impact of 20th century technology on the field, among other topics. Additionally, the volume analyzes the present role and status of celestial navigation, particularly with respect to modern radio and satellite navigation systems. With its diverse authorship and nontechnical language, this book will appeal to any reader interested in the history of science, technology, astronomy, and navigation over the ages.

Download or read book An Historical Account of the Rise Progress and Present State of the Canal Navigation in Pennsylvania With an Appendix Cont Abstracts of the Acts of the Legislature Since the Year 1790 written by Rob Morris and published by . This book was released on 1795 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Account of the rise and progress of Ocean Steam Navigation connected with the present system of contracting for the conveyance of the Public Mails by private steam vessels With suggestions for the extension of Steam to the Cape Mauritius and Australian Colonies written by Andrew HENDERSON (Merchant.) and published by . This book was released on 1847 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An historical account of the rise progress and present state of the canal navigation in Pennsylvania written by Schuylkill and Susquehanna Navigation and published by . This book was released on 1795 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: