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in here with heavy masonry extended (in the Anzures causeway) along the northern side of the rectangle, and continued via S. Cosme to the city. Cultivated fields, adjacent to El Molino, occupied about a third of the rectangle. On each side of the north-and-south drainage ditch there was an embankment. The next section perhaps one sixth of the rectangle was occupied by the swamps and cypresses, and then came the hill extremely steep except at the west, and steep there. A road or wide path led east through the grove to the foot of the hill. The opening in the south wall, covered by the exterior, unarmed redan (B), had a ditch outside of the redan for additional protection. The road that went up to the college was defended inside the main gateway with a 9-pounder (placed here Sept. 12). The circular (arc of a circle) redoubt (C) was at the glorieta (an open space furnished with seats, etc.). One or two other slight fortifications probably existed.

The south wall of the terre-plein had a parapet except near the southeast corner. Along the base of the west wall ran a fosse about twelve feet wide and ten deep. Rather extensive mines (to be fired by powder-trains laid on or just under the surface of the ground) lay below the fosse; and beyond them about half-way down the slope stood a redan (E) for some fifty men, which seems to have been about 125 feet from the wall. This west wall was a priest-cap: i.e., it was indented like a shallow V, so that its two halves could afford support to each other. In the central portion of the terre-plein stood the masonry edifice of the military college with an open terrace at its eastern end and some stone buildings with flat, parapeted roofs, at its western end. A half-round bastion on each of the long sides afforded room for a heavy gun commanding in each case a semicircle. (The one in the southern bastion seems to have been disabled on Sept. 8.) East of the southern bastion, in a smaller projection stood a lighter gun looking toward the lower gateway; behind the somewhat zigzag parapet westward two or three smaller pieces covering the road and the southwest approach; on the terre-plein commanding the upper gateway a couple of light howitzers; and at the western end, specially screened with timber and sand-bags, two heavy pieces, which swept the approach from El Molino. (One of the pieces was a 68-pound howitzer. Ripley is precise in his account of the size and the placing of the guns, but the evidence is against him. He says there were eleven. There seem to have been thirteen; but one of them was not mounted, and two were now disabled.) Timbering, proof against bullets, covered much of the lower story, the parapeted azotea of the main edifice and some other parts of the buildings; and sand-bags afforded further, though inadequate, protection at a number of peculiarly exposed points.

13. Sen. 1; 30, 1, pp. 377 (Scott), 397 (Twiggs), 399 (Riley), 400 (Pillow), 410 (Quitman), 422 (Huger); app., 197 (Pierce), 201 (Cadwalader), 230 (Porter). Sen. 65; 30, 1, p. 185 (Ripley). 260Henshaw, comments on map. 217Id. to wife, Sept. 13. 66Lee to J. L. Smith, Sept. 15. 66 McClellan to Smith, Sept. 20. 66Beauregard to Smith, Sept. 20. 111Id. to Id., Sept. 27. 304Andrews to Lovell, Sept. 19. 304Hunt to Id., Sept. 15. 304Steptoe to Id., Sept. 16. 304Porter to Id., Sept. 16. 304Wilcox, diary. Ramsey, Other Side, 457. 327Sutherland to father, Aug.. 178Davis, diary. Negrete, Invasión, iii, app., 426. 76Carrera, Sept. 1.

14. Negrete Invasión, iv, app., 299-300. 6lLetter from Mex., Sept. 11. Apuntes, 305-6, 309-10, 314. Ramírez, México, 307-8. Diario, Sept. 11. 73Lozano, no. 7, 1847. S. Anna, Apelación, 57. Id., Detail,