File:A Mercators chart (2675598532).jpg
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Summary[edit]
DescriptionA Mercators chart (2675598532).jpg |
Zoom into this map at maps.bpl.org. Author: Sargent, Catharine. Publisher: [s.n.] Date: 1791. Scale: Scale not given. Call Number: G3200 1791.S2 With a floral design embellishing its title cartouche and the use of stylized lettering and boundary symbols, this manuscript map of the world, most likely represents a geography project by a late-18th-century Boston school girl. During the latter decades of the 18th century and the early part of the 19th century, it was common practice for British and American female students to prepare maps of various parts of the world from patterned samples. School girls also made cloth samplers, embroidering the lettering and boundaries as outlined on their patterns. Such projects were designed to combine instruction in both geography and needlework. There are several characteristics of this map which are unusual for the time period. In contrast to most 18th-century world maps which used a double hemisphere projection, this sample was based on the Mercator projection. In addition, the geographical features as outlined on the map were quite out of date -- California as an island rarely appeared on maps after the first third of the 18th century. Interestingly, this presentation was centered on the 150th degree of longitude east of the Greenwich (London) Prime Meridian, rather than the Greenwich meridian itself. Consequently, the central focus was the Pacific Ocean and the East Indies, which brings the reader's attention to a ship's track crossing the Pacific near the Equator. Although this track was not identified, it is the course of British Commodore George Anson's voyage around the world from 1741-1744. Anson's circumnavigation was the most important British voyage between Sir Francis Drake and Captain James Cook, primarily because of the extensive treasures that he captured from the Spanish galleons. |
Date | |
Source | A Mercators chart |
Author | http://maps.bpl.org |
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This image, originally posted to Flickr, was reviewed on 21 August 2013 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:40, 21 August 2013 | 2,000 × 1,500 (2.05 MB) | File Upload Bot (Magnus Manske) (talk | contribs) | Transferred from Flickr by User:tm |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Sinar AG |
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Camera model | Sinarback 54 FW, Sinar m |
Author | Boston Public Library |
Width | 10,880 px |
Height | 8,160 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 600 dpi |
Vertical resolution | 600 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS3 Macintosh |
File change date and time | 18:07, 10 July 2008 |
Color space | Uncalibrated |
Image width | 2,000 px |
Image height | 1,500 px |
Date and time of digitizing | 14:07, 10 July 2008 |
Date metadata was last modified | 14:07, 10 July 2008 |
IIM version | 2 |