Notes of a Journey in Yemen Author(s): Charles Millingen Source: Proceedings of the Royal Geographical Society of London, Vol. 18, No. 2 (1873 - 1874), pp. 194-202 Published by: Wiley on behalf of The Royal Geographical Society (with the Institute of British Geographers) Stable URL: http://www.jstor.org/stable/1799976 . Accessed: 14/06/2014 01:25 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. Wiley and The Royal Geographical Society (with the Institute of British Geographers) are collaborating with JSTOR to digitize, preserve and extend access to Proceedings of the Royal Geographical Society of London. http://www.jstor.org This content downloaded from 185.44.79.85 on Sat, 14 Jun 2014 01:25:26 AM All use subject to JSTOR Terms and Conditions 194 NOTES OF A JOURNEYIN YEMEN. [Feb. 23, 1874. producewhich are extremelyvaluable in manufacturesand commerce,would be broughtback in exchange. An idea of the obstructivenessand exactionsof the interveningtribes was affordedby the fact that, sixteen years ago, a puncheon of oil at the mouth of the Niger cost 4? tons of salt, while, at the confluenceof that riverwith the Chad, only 270 miles up, salt could be exchangedfor oil, weight forweight.