(estimated) 5.00 m.-- 16 ft.
W. corner of _L_. to _p_ 16.17 m.-- 53 ft.
_p_ to _y_ 2.10 m.-- 7 ft.
_y_, southward, to line
_g g_ 33.44 m.--110 ft.
passage-way N .00 m.-- 6 ft. 6 in.

Width of western section
of W. wing
(about) 7.48 m.-- 25 ft.
Length of south wing 13.00 m.-- 43 ft.
28 transverse walls a
.28 m.--11 in. 7.84 m.-- 26 ft.
----------------
106.02 m.--348 ft. 6 in.

Width of S. wing 27.25 m.-- 90 ft.
Passage _R_ 4.00 m.-- 13 ft.
From _R_ to _f_ (about) 4.00 m.-- 13 ft.
Line _f f_ 15.73 m.-- 52 ft.
8 longitudinal walls a
.28 m.--11 in. 2.24 m.-- 7 ft.
----------------
Total length to _f_, my
point of departure 53.22 m.--175 ft.
------------------
Entire length of circuit
of building _A_ 283.36 m.--928 ft.

Adding to this 15 m.--49 ft.--for the probable periphery of mound _H_,
and 64 m.--210 ft.--for the perimeter of a southern annex to the south
wing, which I have not yet described, we reach a perimeter of 362
m.--1,190 ft.--in all. Comparing these figures with those given about
the great ruins of the Rio Chaco by Dr. W. H. Jackson,[120] and of the
pueblo of Las Animas River by my friend the Hon. L. H. Morgan,[121] it
will be seen that this building, _A_, at Pecos is probably the largest
aboriginal structure of stone within the United States so far described,
and that it will even bear comparison with many of the aboriginal ruins
of Mexico and Central America.[122]

The size of the interior court can now be easily determined. It is 64
m.--210 ft.--from N. to S., and 19.28 m.--63 ft.--from E. to W. Its area
covers therefore 1,235 sq. m.--13,230 sq. ft.,--or about one fourth of
an acre; whereas the entire _debris_, measured as well as possible,
scatter over more than two acres of ground.

For the computation of the number of rooms in the whole pile,
cross-sections are necessary. (Pl. V., Figs. 1-8.) The height of each
story is about the same as in _B_, to wit, 2.28 m.--7 ft. 6 in.

Fig. 1, section of west wing about _l l_, fro