File:VitruviusTenBooksMHMorgan1914p295.gif

Vitruvius: The Ten Books on Architecture. Vitruvius. Morris Hicky Morgan. Cambridge: Harvard University Press. London: Humphrey Milford. Oxford University Press. 1914. The image is on page 295. The copyright is expired.

This image is to be found in several places on the web and in books:

ISBN: 0415061377 Greek and Roman Technology: A Sourcebook by John W Humphrey p. 316 Section 8.30 Fig. 17 Design for a Vitruvian Water-Screw. Note that on page xiii permissions are recorded for several copyrighted images but not for this one.

The image appears with no source cited at http://www.math.nyu.edu/~crorres/Archimedes/Screw/VitScrew.gif http://www.math.nyu.edu/~crorres/Archimedes/Screw/SourcesScrew.html#vitruvius captioned "Construction of the water screw"

It also appears at http://www.redstoneprojects.com/trebuchetstore/archimidesescrewcutaway.gif http://www.redstoneprojects.com/trebuchetstore/archimedesscrew.html beside the Morgan translation of the Vitruvius passage.

Those two .gif images are not identical, but overlay perfectly when aligned. They differ in the way the transparent pixels were selected. This suggests they were not independently scanned.

The image also appears at http://www.palmers.ac.uk/internet/Previous%20Events/Eric%20Excellence%20day/webs2003/PYTHON%20WEBSITE/VitScrew.gif http://www.palmers.ac.uk/internet/Previous%20Events/Eric%20Excellence%20day/webs2003/PYTHON%20WEBSITE/Arcscrew.htm

The actual ancient latin text states that there is an illustration at the end of the manuscript.

ISBN: 1417969571 Vitruvius: The Ten Books on Architecture translated by Morris H. Morgan Copyright 1914 Harvard University Press; the copyright is expired.

Vitruvius: The Ten Books on Architecture. Vitruvius. Morris Hicky Morgan. Cambridge: Harvard University Press. London: Humphrey Milford. Oxford University Press. 1914.

The image is on page 295.

The Perseus project has the text and two images:

http://www.perseus.tufts.edu/cgi-bin/ptext?lookup=Vitr.+10.6.1 http://www.perseus.tufts.edu/cgi-bin/image?lookup=Perseus:image:2000.23.0061&image=1

http://www.perseus.tufts.edu/cgi-bin/image?lookup=2000.23.0061

http://www.perseus.tufts.edu/cgi-bin/image?lookup=2000.23.0062

http://www.perseus.tufts.edu/cgi-bin/image?lookup=Perseus:image:2000.23.0062&image=1

From http://www.perseus.tufts.edu/Help/faq.html

'I would like a copy of one of the images I've seen in Perseus, how do I get one?'

The credit notices for all images appear at the top of each image page. If this notice reads "...courtesy of X museum," you must contact the named museum for permission to reproduce their image. Addresses for museums are at the bottom of our copyright page.

The Perseus Project does not have permission or resources to redistribute images. No image contained in the Perseus digital library may be reproduced in any form without permission of the copyright holders. We cannot authorize reuse of Perseus images on other WWW sites, even for educational, non-profit use. If you have further questions about images, please contact us.

In the case of these images, it is clear that there are no copyright holders, since the images were published in 1914.

From http://www.perseus.tufts.edu/copyright.html

The materials on the Perseus Project Web pages (including all texts, translations, images, descriptions, drawings etc.) are provided for the personal use of students, scholars, and the public. Any commercial use or publication of them without authorization is strictly prohibited. All materials are copyrighted and are not in the public domain. Copying of materials on the Perseus Web pages is not permitted.

Clearly, this statement is overly broad. Some of the materials are in the public domain. A compilation copyright does not entitle the holder to prohibit copying of text not subject to copyright.

	這一媒體文件在美國屬於公有領域。這可用於版權過期的美國作品，通常這些作品發表於1929年1月1日之前。查看這個頁面可以獲取到更多的解釋。
	這一圖片在美國以外可以沒有處於公有領域，特別是對美國作品不適用較短期限法則的國家，如加拿大、中國大陸（不含香港及澳門）、德國、墨西哥和瑞士。作品的作者和發表時間是關鍵信息，並且必須提供。參見 維基百科:公有領域及維基百科:版權信息以獲取更多細節。