National Geographic : 1890 Aug
The Ordnance Survey of Great Britain. 259 HILL SHADING. The hill features for the one inch maps are first sketched in the field by the military method of slopes and sketch contours or proof impressions of the contoured sheet. Finished drawings from the field sketches are then made on cardboard impressions from the one inch outline plates, and finished as guides for the engraver to work by. Beautiful and delicate in finish as is all the work of the copper plate engravers on the Ordnance Survey, there is perhaps no branch in which they so peculiarly excel as in their delineation of hills on the one inch maps. III. It is impossible in the limits of a single paper to attempt to describe the methods and processes of publication which are car ried at the headquarters of the Ordnance Survey at Southampton. Carefully prepared treatises on the subject have been written by officers engaged in the work, and for clear and concise descrip tion none are better than the series of articles by Captain H. Sankey, R..E., published in Engineering,in 1888. There are two points of great interest in connection with the Ordnance Survey which cannot be neglected. The one its mili tary organization, and the other the economy of its methods of publication. Of its military organization, which has continued since the first surveys were made for military purposes, it may be said that the conservative precision of its methods of field work are best adapted for military control and discipline. Under the successive superintendence of highly educated officers of the Royal Engineer Corps, whose patriotic efforts have been to secure efficiency and economy in the service, the country has greatly profited. Many of the improvements and inventions that have made possible the publication of maps of all scales at the lowest pos sible cost, are the results of experiments made by these officers. It should not be forgotten in addition that as a branch of the War Office and the Publishing Department of the Intelligence Branch, military supervision is essential. Its offices are therefore not open for public inspection except on proper introduction.
1891 Mar 28