it gently curves to the westward for about a mile and a half. The meanderings of the Modder are even more remarkable. Its most southern elbow is half a mile north-east of the spot where the Riet turns for the second time north-west. Thence it runs for a mile to the north, then about the same distance to the west; it turns southward for a mile, and then flows westward for three-quarters of a mile, where, a few hundred yards above the railway bridge, it merges into the Riet. Both these streams have cut themselves channels so wide as to allow a thick growth of trees and scrub to line their sides, so deep that the vegetation which they contain hardly shows above the level of the surrounding plain. There are few practicable fords across the Riet. One exists at Bosman's Drift; there is a second near the railway bridge; among the group of islets at Rosmead there is a natural ford, while the retaining wall of the weir which dams the river at this village can be used, not without difficulty, by active men in single file. Elsewhere the depth of the water and the mud at the bottom of the Riet effectually combine to prevent the passage of troops. Thus the Riet and the Modder together formed not only a gigantic moat across the approaches to Kimberley from the south and south-east, but a covered way, by which its defenders could move unseen to any part of the position. [Footnote 168: See map No. 9 and freehand sketch.] [Sidenote: Two hamlets on the Riet. Other details.] On the right bank of the Riet there are two hamlets. One, known as Modder River village, is clustered round the station; the other, Rosmead, lies a mile further down the river. In both are farms and cottages with gardens, bounded by trees, strongly-built mud walls, and fences of wire and prickly cactus. On the left bank, close to the river, there are two or three farms, surrounded by gardens and substantial enclosures. About five miles to the north-east of the Modder River village the Magersfontein kopjes loom dark and frowning, a landmark for all the country round; while still further to the north the heights of Scholtz Nek and Spytfontein lie athwart the railway to Kimberley.[169] A glance at the reproduction of Captain Erskine's freehand sketch of the ground will help the reader to appreciate the strength of the Boer position. [Footnote 169: See map No. 13.] [Sidenote: Nov. 26th/99. Halt at Enslin.]