Talk:Mason–Dixon line

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Source of Technical Information for Survey[edit]

Article has an unreferenced section tag on it dated October 2012. While looking up some material for another article I found a source on surveying history (The makers of surveying instruments in America since 1700) that has some of the details on the project. I will try to map some of those into the article... Cheers Risk Engineer (talk) 10:45, 23 December 2013 (UTC)


What Is This Supposed to Mean?[edit]

"During such survey work it is normal to survey along the length of the line and then survey back to the starting point which with no errors would coincide." That sentence is really pretty obscure. GeneCallahan (talk) 01:51, 17 January 2011 (UTC)

"During such survey work it is normal to survey along the length of the line and then to survey back to the starting point; ideally there would be no return error at all, while typically there would be return errors that were random - . . ."

EdK (talk) 11:44, 17 January 2011 (UTC)

IMDB as RS[edit]

Just a reminder - it's not WP:RS. See Wikipedia:Imdb#IMDb. Likewise, most of the text in the "popular culture" section is WP:OR since the opinions expressed are unsourced TEDickey (talk) 10:32, 2 October 2011 (UTC)

Yes they are now--Godwhale (talk) 18:59, 5 October 2011 (UTC)

There are sources given, but (a) not all of the opinions are "sourced", and (b) the ones given aren't cited so that someone can verify them. TEDickey (talk) 21:14, 5 October 2011 (UTC)

Ownership of land between North Line and Arc Line[edit]

The text in this page as well as The_Wedge_(border) seems to indicate that the land between the North Line and the Arc Line was intended to be in Delaware. The blue color of that zone in the image goes the same way. But looking at modern maps, it seems that that land is in fact in MD. The text in Delaware ("Diagram of the Twelve-Mile Circle, the Mason-Dixon Line and "The Wedge". All blue and white areas are inside Delaware, except for the small sliver of Maryland on the western extremity of the circle.") also lean toward MD. Clarifications please. 199.84.44.28 (talk) 23:32, 7 December 2012 (UTC)

Requested move[edit]

The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review. No further edits should be made to this section.

The result of the move request was: moved per request. Favonian (talk) 18:15, 2 January 2013 (UTC)


Mason–Dixon LineMason–Dixon line – No reason for caps here, per MOS:CAPS. Lowercase is much more common in sources. Dicklyon (talk) 07:32, 26 December 2012 (UTC)

  • Weak Support. Ngrams shows historically line is usually not capitalized [1]. Zarcadia (talk) 17:16, 27 December 2012 (UTC)
The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page or in a move review. No further edits should be made to this section.

Notes on "popular culture"[edit]

Entries lacking at least a link to an existing topic haven't any links to a reliable source. The reader shouldn't have to do a web-search to see the one- or two-line mention of Dixie in the lyrics. TEDickey (talk) 10:35, 14 April 2013 (UTC)

The repetition of Sailing to Philadelphia of course, is done for purely promotional purposes. There's no need for that, either. TEDickey (talk) 10:38, 14 April 2013 (UTC)

There is NOTHING promotional about Sailing to Philadelphia in this article, as it clearly does relate to the subject at hand. Please refrain from adding commentary or your own personal analysis to Wikipedia articles. Doing so violates Wikipedia's neutral point of view policy and breaches the formal tone expected in an encyclopedia. Thank you. 71.176.14.40 (talk) 04:01, 30 April 2013 (UTC)

It is certainly promotional, essentially making STP the main items in the trivia category, providing more words than in any of the WP:RS, and given the editing history, appears to be mostly 1-2 individuals promoting it. TEDickey (talk) 08:15, 30 April 2013 (UTC)
Please refrain from making unconstructive edits to Wikipedia. Your edits appear to constitute vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Thank you. 71.176.14.40 (talk) 10:58, 30 April 2013 (UTC)
Try to stick to finding WP:RS rather than focusing on personal attacks. So far, your edits are nonconstructive TEDickey (talk) 11:00, 30 April 2013 (UTC)
YOU try to stick to WP:RS. This has been demonstrated already on the article page for Sailing to Philadelphia already. So far, your nonconstructive edits constitute WP:BIAS and are indicative of vandalism. 71.176.14.40 (talk) 11:04, 30 April 2013 (UTC)
The most recent edit is an improvement. The given sources still need work to support the statements made TEDickey (talk) 20:47, 30 April 2013 (UTC)
Glad you concur, although YOU could have made the same edits yourself instead of nitpicking, TEDickey. Thanks for your assistance. 71.176.14.40 (talk) 21:01, 30 April 2013 (UTC)

In 1958, guitarist Duane Eddy released a 7" single containing the song "Mason Dixon Lion," which is sometimes referred to as "Mason Dixon Line." See [2] and [3]. However, it won't hurt my feelings if it's not included. berfle (talk) 01:55, 29 October 2013 (UTC)

Systematic errors[edit]

The article mentions Cavendish's theory of the Allegheny mountains influencing Mason's measurements, and also the subsequent Schiehallion experiment. What I'm missing here is the final conclusion: Was Cavendish correct? Was it the mountains? Was there some other reason for the systematic errors? Or was the issue never cleared up completely? --BjKa (talk) 12:25, 30 October 2013 (UTC)

Danson's article "The Work of Charles Mason and Jeremiah Dixon", and other sources have discussed the effects of variations in the direction of gravity on the line. See bibliography at Mason Dixon Preservation Partnership web site http://www.mdlpp.org As I recall, the line wanders about 900 feet from a geodetic line of latitude, but only 200 feet (and usually a lot less) from a line of astronomical latitude, the main difference being due to deflection of the gravity vertical, or of a plumb bob. Attraction of mountains is a major contributor to this, but you don't have to be on a mountain to have such effects. NGS data shows 5.5 seconds change (about 550 feet) in deflection of latitude (Xi factor) between southern Philadelphia and the Stargazer Stone, still some distance from significant mountains. BillHart93 (talk) 15:23, 30 October 2013 (UTC)

Mason-Dixon Line and Slavery[edit]

The lead paragraphs go into too much detail on this subject. Someone recently tried to simplify it but made a messy edit that was reverted. Should most of this material be put in a separate section and only a sentence left in the lead? BillHart93 (talk) 22:10, 30 October 2013 (UTC)