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| Keywords: The Quarterly journal of the Geological Society of London (12683091603).jpg 106 PROCEEDINGS OF THE GEOLOGICAL SOCIETY DcC 5 <br> Fig 2 The Matterhorriy as seen from the Riffelherg <br> E E indicate the line of erosion <br> 9000 feet ; there is a thick covering of snow round it which con- <br> ceals the line of erosion and makes it appear to be higher than it <br> really is <br> There is no distinct lower limit to the abraded or rounded portion <br> of the mountains but the upper limit of the abrasion is usually well <br> marked by a change in the outline of the hill-sides from a moderate <br> to a steeper slope similar to the indentation produced on a coast by the <br> waves beating against a cliff The nearly uniform height of this <br> re-entering angle produces a tolerably level line round the mountains <br> which I shall speak of as the line of erosion It is best seen when <br> the observer is at a distance or if near is only a few hundred feet <br> helow it when a horizontal line may often be traced by the eye round <br> every one of the mountain-tops within its reach ; this is nowhere <br> more remarkable than in the view from the top of the Splugen Pass <br> When standing on the level of the line of erosion it is often more <br> difficult for the eye to follow it ; slight inequalities in the ground <br> which are near at hand concealing or interfering with the view This <br> makes it difficult to measure the height of the erosion within 1 00 or <br> 200 feet even under favourable circumstances But there are spots <br> free from this difficulty whoever has ascended from Zermatt to the <br> Kiffelberg must remember the distinctness with which the conical <br> Riffelhorn rises from the flat at the top of the rounded Riffelherg <br> the line of erosion is there as well marked as at the foot of a sea- <br> cliff being by my aneroid between 9000 and 9100 feet above <br> the sea <br> When the observer is more than 1000 feet below the line it will <br> require a practised eye to estimate its height within 500 feet ; and <br> the result will be merely a rough guess which will usually prove to <br> be below the truth In the following statements I have pointed out <br> those measurements which are most to be relied on ; but in general <br> Some excellent profiles of cliffs and beaches have been given by Mr Godwin- <br> Austen Quart Journ Geol Soc vol vii pp 118 120 and 124 35338539 109655 51125 Page 106 Text v 12 http //www biodiversitylibrary org/page/35338539 1856 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 12 1856 Geology Periodicals Smithsonian Libraries bhl page 35338539 dc identifier http //biodiversitylibrary org/page/35338539 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-21 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12683091603 2015-08-27 11 54 09 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1856 Photos uploaded from Flickr by FĂŚ using a script | ||||
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