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I cannot answer your question. I will note that there is an infinite count of great circles on the earth's surface, not" five". Regards, daan Strebe -----Original Message----- From: [email protected] To: History of Maps <[email protected]> Sent: Sun, Apr 24, 2011 9:03 am Subject: [MapHist] Tropic of Cancer and of Capricocrn This is a MapHist list message (when you hit 'reply' you're replying to the whole list) o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + #AOLMsgPart_4_500a6304-74b4-4bdd-9fb6-9d677ea9988a td{color: black;} #AOLMsgPart_4_500a6304-74b4-4bdd-9fb6-9d677ea9988a p { margin: 0; } In my class I was asked when the tropics of Cancer and Capricorn were identified as two of the five great circles around the earth. Wikipedia has failed me on the question. Surely these go back before the Greeks who named them. I would like to impress my students with an answer and would appreciate whatever you can give me. The next one will probably be the equinoctial line. (Sigh!) Tom Goodrich _______________________________________________ MapHist: E-mail discussion group on the history of cartography hosted by the Faculty of Geosciences, University of Utrecht. The statements and opinions expressed in this message are those of the author and do not necessarily reflect those of the University of Utrecht. The University of Utrecht does not take any responsibility for the views of the author. List Information: http://www.maphist.nl Maphist mailing list [email protected] http://mailman.geo.uu.nl/mailman/listinfo/maphist
_______________________________________________ MapHist: E-mail discussion group on the history of cartography hosted by the Faculty of Geosciences, University of Utrecht. The statements and opinions expressed in this message are those of the author and do not necessarily reflect those of the University of Utrecht. The University of Utrecht does not take any responsibility for the views of the author. List Information: http://www.maphist.nl Maphist mailing list [email protected] http://mailman.geo.uu.nl/mailman/listinfo/maphist
