Abstract
IN some countries it appears so natural that the national surveys should present a complete delineation of the solid surface of the land that the accident of certain hollows being filled with water does not excuse the surveyor from continuing his contour lines across the submerged slopes. With us, however, until the Survey Department was supplied with the necessary data by private investigators, no sub-lacustrine contour lines appeared even on maps of the largest scale, and large surfaces of paper remained blank save for the artistically graduated lines which indicated the difference between a water and a land surface. Most of the English lakes were surveyed in 1893 and 1894, and the contour lines appear on the later editions of the six-inch maps, with due acknowledgment of the source whence they were derived.
Bathymetrical Survey of the Fresh-water Lochs of Scotland.
Under the Direction of Sir John Murray., and Laurence Pullar. Pp. viii+288; maps and plates. (London: Royal Geographical Society, and Edward Stanford, 1908.)
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M., H. Bathymetrical Survey of the Fresh-water Lochs of Scotland . Nature 81, 155–156 (1909). https://doi.org/10.1038/081155a0
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DOI: https://doi.org/10.1038/081155a0
