To return to the structure itself, its general plan and its mode of construction in detail more and more forcibly remind me of an extraordinarily large honeycomb. The various walls, a few of the outer walls excepted, have little strength in themselves (as the rapid decay shows), but combined altogether they oppose to any outside pressure an immense amount of "inertia." There is not in the whole building one single evidence of any great progress in mechanics. Everything done and built within it can be built and made with the use of a good or fair eyesight only, and the implements and arts of what was formerly called the "stone age." This does not exclude the possibility that they had made a certain advance in mechanical agencies. They may have had the plummet, or even the square; but such expedients, applied to their system of building, might at most have hastened the rapidity of construction. Necessary they were not at all, still less indispensable. As the bee builds one cell alongside of the other and above the other,--the norm of one and the "habitat" impelling the norm of those above and alongside,--so the Indians of Pecos aggregated their cells according to their wants and the increase of their numbers; their inside accommodations, the wood-work, bearing the last trace of the frail "lodge" of a former shifting condition. Leaving _B_ for the present, I turn to the other ruins on the so-called "neck" of the _mesilla_. 4 m.--13 ft.--west of the N.W. corner of the northern annex, I struck stone foundations indicating a structure (whether enclosure or building I do not venture to tell) 10.21 m.--33 ft.--from E. to W., and 6.60 m.--22 ft.--from N. to S.[114], 49 m.--160 ft.--to the north-west of its north-easterly angle there is a mound about 2 m. or 6 ft. in diameter, thence 20 m.--65 ft.--further N.W. or N.N.W. the southern ruins of the east wing of _A_ are reached. Parallel to _B_, longitudinally, and at an average distance of 28 m.--90 ft--to the west from it, there is a row of detached buildings or structures, of which only the foundations and shapeless stone heaps indicating the corners remain. Pl. I., Fig. 8, conveys an idea of their position and size. The walls are reduced to mere foundations, or to heaps in the corners; but these remnants indicate that the rocks used were similar in kind and shape to those composing the walls of all the other kinds of construction in the _mesilla_ north of the church.