different calibres, from four to eighteen pounders. This fort was situated near the junction of the three roads leading respectively to Pesquería Grande, Monclova, and Marin. Between it and the town an affluent of the Rio San Juan flowed easterly through the suburbs, the banks of which were steep and difficult. Near the middle of its course it was spanned by the bridge of La Purísima. On the east of the town, just above the junction of this rivulet with the main stream, was Fort Tenería, mounting four or five guns which covered the roads from Marin and Cadereita. Farther south was Fort Diablo with three
guns, and still farther in the same direction Fort La Libertad with four guns. A system of lunettes was commanded by these forts, and along the northern bank of the Rio San Juan a line of barricades extended for some distance, and turning northward
- ↑ Explanation of plan:
A. Principal plaza. G. Fort of La Federacion. B. Other plazas. H. Intrenchments. C. Citadel. I. American mortar battery on night of the 23d. D. Fort of Teneria. J. Cerro del Obispado. E. Fort of El Diablo. K. Cemetery. F. Fort of La Libertad. L. Cathedral.
