Fluid Geography, Page 136 
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136 FLUID GEOGRAPHY triangles and squares are then interwoven with great circle grids, the triangles by a threeway grid of great circles and the squares by a twoway grid of great circles. These grid lines spring from uniform scale modular subdivisions of the 6oo arc sections in as fine a degree as is desired. The geographical data coinciding with these grids is then transferred to eight equilateral plane triangles and six plane surface squares. For purposes of this translation, the plane triangles and square have been prepared as follows: their surfaces are subdivided by respective threeway and twoway grids of straight lines. These straight lines spring from modular subdivisions of their boundaries which correspond in scale and number to the subdivisions of the original spherical arc segments of 6oo. The spherical geographical data is then posted to corresponding positions in the appropriate plane grid spaces. The spherical great circle grids are thus treated as constituting straight lines in the plane geometrical surface. The principle of treating great circles and straight lines as constituting one and the same thing, effects the distribution of the angular contraction in a concentric disposition on the plane sections. Key to understanding why this method accomplishes its translation with a minimum of distortion is that it treats the 180° spherical gores in two ways. The irreconcilable conditions of convergence and parallelism, characterizing the terminals and midpart of the 180° gores, are treated separately and symmetrically as triangles and squares respectively. All other projections impose the advantage of one feature against the advantage of the other by trying to solve both convergence and parallelism by one grid. These resolved gore parts of the Dymaxion map, by treating these conditions separately, allow fourdimensional unwrapping of the sphere.
Object Description
Title  Volume IV. No. 2 April 1944 
Description  Articles include: Historical Notes on the Gilbert and Marshall Islands by Samuel Eliot Morison; Fluid Geography by Richard Buckminster Fuller; The First American Steam Passenger Line to South America by Francis O. Braynard; and The Polly of Amesbury by john R. Herbert. Notes and Book Reviews are also included. 
Date  1944, April 
Subjects  Braynard, Frank O. (Frank Osborn), 19162007; East India Company; Fuller projection (Cartography); Fuller, R. Buckminster, (Richard Buckminster), 18951983; Gilbert Islands; Handy, Samuel Clarke, Captain; Herbert, John R.; Mail steamers; Marshall Islands; Maury, Matthew Fontaine, 18491886; Mercator projection (Cartography); Merchant ships – History; Morison, Samuel Eliot, 18871976; Polly (Sloop); Stevenson, Robert Louis, 18501894; United States and Brazil Mail Steamship Company; Upton, Jeduthun, Captain 
Publisher  Peabody Essex Museum, Salem, Massachusetts 
Sponsor  This digitization project was sponsored by the Salem Marine Society. 
Format  A Quarterly Journal of Maritime History and Arts 
Publication Rights  Requests for permission to publish material from this collection must be submitted in writing to The Russell W. Knight Curator of Maritime Art and History at the Peabody Essex Museum. 
Description
Title  Fluid Geography, Page 136 
Author  Richard Buckminster Fuller 
Description  136 FLUID GEOGRAPHY triangles and squares are then interwoven with great circle grids, the triangles by a threeway grid of great circles and the squares by a twoway grid of great circles. These grid lines spring from uniform scale modular subdivisions of the 6oo arc sections in as fine a degree as is desired. The geographical data coinciding with these grids is then transferred to eight equilateral plane triangles and six plane surface squares. For purposes of this translation, the plane triangles and square have been prepared as follows: their surfaces are subdivided by respective threeway and twoway grids of straight lines. These straight lines spring from modular subdivisions of their boundaries which correspond in scale and number to the subdivisions of the original spherical arc segments of 6oo. The spherical geographical data is then posted to corresponding positions in the appropriate plane grid spaces. The spherical great circle grids are thus treated as constituting straight lines in the plane geometrical surface. The principle of treating great circles and straight lines as constituting one and the same thing, effects the distribution of the angular contraction in a concentric disposition on the plane sections. Key to understanding why this method accomplishes its translation with a minimum of distortion is that it treats the 180° spherical gores in two ways. The irreconcilable conditions of convergence and parallelism, characterizing the terminals and midpart of the 180° gores, are treated separately and symmetrically as triangles and squares respectively. All other projections impose the advantage of one feature against the advantage of the other by trying to solve both convergence and parallelism by one grid. These resolved gore parts of the Dymaxion map, by treating these conditions separately, allow fourdimensional unwrapping of the sphere. 
Date  1944, April 