APPENDIX. VOL. I.

THERMOMETRICAL OBSERVATIONS.

Temperature of Merida, according to observations taken by the cura Don Eusebio Villamil, for one year, beginning on the 1st of September, 1841, and ending on the 31st of August, 1842. The observations were taken with a Fahrenheit thermometer at six in the morning, midday, and six in the evening. The thermometer stood in the shade, in an apartment well ventilated.

TABLE OF STATISTICS OF YUCATAN.

POPULATION OF YUCATAN.

Statement showing the number of inhabitants in the five departments into which the state is divided, distinguishing the sexes; taken from the census made by order of the government on the 8th of April, 1841.

NOTE.—"This census is probably not very exact, because, having continually the fear of new contributions, and detesting military service, every one reduces as far as possible the number of his family in the lists prepared for the census. It appears to me that the total population of Yucatan may be fixed at 525,000 souls."—P. De R.

"The best information I have been enabled to obtain goes to show that the population of the state cannot fall short of 600,000 souls."—J. B. Jr.

SYSTEM ADOPTED BY THE ANCIENT BUILDERS OF YUCATAN IN COVERING THEIR
ROOMS WITH STONE ROOFS.

The engraving No. 1 represents the arch referred to in the description of the Monjas at Uxmal; and as the stones are not quite horizontal, but stand nearly at right angles to the line of the arch, it shows how near an approach was made to the real principle on which the arch is constructed.

Triangular Arch
Engraving 51: Triangular Arch

Throughout every part of Central America, Chiapas, and Yucatan, the same method is to be traced with slight modifications. The stones forming the side walls are made to overlap each other until the walls almost meet above, and then the narrow ceilings are covered with a layer of flat stones. In every case the stones were laid in horizontal layers, the principle of constructing arches, as understood by us, being unknown to the aboriginal builders. This readily accounts for the extreme narrowness of all their rooms, the widest not exceeding twenty feet, and the width more frequently being only from six to ten feet. In a few cases the covering stone is wanting, and the two sides meet so as to form a sharp angle. At Palenque the builders did not cut the edges of the stones, so as to form an even surface, their practice differing in this respect from that adopted in Yucatan, where in every instance the sides of the arch are made perfectly straight, or have a slight curve, with the inner surfaces smooth.

It may now be interesting to inquire if any similarity exists between the American method and those observed among the nations of antiquity in Europe and Asia. A true arch is formed of a series of wedge-like stones or of bricks, supporting each other, and all bound firmly together by the pressure of the centre one upon them, which latter is therefore distinguished by the name of keystone.

It would seem that the arch, as thus defined, and as used by the Romans, was not known to the Greeks in the early periods of their history, otherwise a language so copious as theirs, and of such ready application, would not have wanted a name properly Greek by which to distinguish it. The use of both arches and vaults appears, however, to have existed in Greece previous to the Roman conquest, though not to have been in general practice. And the former made use of a contrivance, even before the Trojan war, by which they were enabled to gain all the advantages of our archway in making corridors or hollow galleries, and which, in appearance, resembled the pointed arch, such as is now termed Gothic. This was effected by cutting away the superincumbent stones at an angle of about 45° with the horizon.

Of the different forms and curves of arches now in use, the only one adopted by the Romans was the semicircle; and the use of this constitutes one leading distinction between Greek and Roman architecture, for by its application the Romans were enabled to execute works of far bolder construction than those of the Greeks: to erect bridges and aquæducts, and the most durable and massive structures of brick. On the antiquity of the arch among the Egyptians, Mr. Wilkinson has the following remarks: "There is reason to believe that some of the chambers in the pavilion of Remeses III., at Medeenet Haboo, were arched with stone, since the devices on the upper part of their walls show that the fallen roofs had this form. At Saggara, a stone arch still exists of the time of the second Psamaticus, and, consequently, erected six hundred years before our era; nor can any one, who sees the style of its construction, for one moment doubt that the Egyptians had been long accustomed to the erection of stone vaults. It is highly probable that the small quantity of wood in Egypt, and the consequent expense of this kind of roofing, led to the invention of the arch. It was evidently used in their tombs as early as the commencement of the eighteenth dynasty, or about the year 1540 B.C.; and, judging from some of the drawings at Beni Hassan, it seems to have been known in the time of the first Osirtasen, whom I suppose to have been contemporary with Joseph."—Manners and Customs of the Anc. Egyptians, vol. ii., p. 116, 117, 1st series.

The entrance to the great Pyramid at Gizeh is somewhat similar in form to the arches found in Yucatan; it consists of two immense granite stones of immense size, meeting in a point and forming a sharp angle.

Stone Arch at Gizeh

Of the accompanying plates, No. 2 represents the arches in the walls of Tiryns, copied from Sir W. Gell's Argolis; No. 3, an arch (called Cyclopean) at Arpino, in the Neapolitan Territory; No. 4, the most common form of arch used by the ancient American builders. A striking resemblance will doubtless be observed, indeed, they may almost be considered identical; and it may be added, that at Medeenet Haboo, which forms a part of the ancient Egyptian Thebes, a similar contrivance was observed by Mr. Catherwood. From this it will appear that the true principles of the arch were not understood by the ancient Egyptians, Greeks, or Etruscans, or by the American builders. It might be supposed that a coincidence of this strongly-marked character would go far to establish an ancient connexion between all these people; but, without denying that such may have been the case, the probabilities are greatly the other way.

Gothic Arch
Engraving 52: Gothic Arch

Cyclopean Arch
Engraving 53: Cyclopean Arch

This most simple mode of covering over a void space with stone, when single blocks of sufficient size could not be employed, would suggest itself to the most barbarous as well as to the most refined people. Indeed, in a mound lately opened in the Ohio Valley, two circular chambers were discovered, and are still preserved, the walls being made of logs, and the roofs formed by overlapping stones rising to a point, on precisely the same plan as the Treasury of Atreus at Mycenæ, and the chamber at Orchomenus, built by Minyas, king of Bœotia. No inference as to common origin or international communication can with safety be drawn from such coincidences, or from any supposed coincidence between the pyramidal structures of this Continent and those of Egypt, for no agreement exists, except that both are called pyramids.

Arch used by the ancient American Builders
Engraving 54: Arch used by the ancient American Builders

In the Egyptian Pyramids the sides are of equal lengths, and, with one exception (Saccara), composed of straight lines, which is not the case with any pyramid of the American Continent. The sides are never equal, are frequently composed of curves and straight lines, and in no instance form a sharp apex.

VESTIGIA PHALLICÆ RELIGIONIS PROUT QUIBUSDAM MONUMENTIS AMERICANIS
INDICANTUR.—(Vid. tom. i., pag. 181.)

Haec monumenta ex undecim Phallis constant, omnibus plus minusve fractis, undique dispersis, atque solo semiobrutis, duoram circiter vel trium pedum mensuram habentibus. Non ea nosmetipsi reperimus neque illis hanc Phallicam naturam attribuimus; nobis autem, has regiones ante pererrantibus, hæc eadem monumenta Indi ostenderunt, quodam nomine appellantes lingua ipsorum eandem vim habente, ac supra dedimus. Quibus auditis, hæc Phallicæ religionis, his etiam in terris, vestigia putanda esse tunc primum judicavimus. Monumenta attamen de quibus huc usque locuti sumus, non, ut bene sciunt eruditi, libidinem denotant, sed potius, quod memoria dignissimum, nostra etiam continente vis genitalis cultum, omnibus pæne antiquis Europæ Asiæque nationibus communem, per symbola nota olim viguisse. Quam autem cognationem hic Phalloram cultus his populis cum Americæ aboriginibus indicare videatur, non nostrum est, qui visa tantum vel audita litteris mandamus, his paginis exponere.

ANCIENT CHRONOLOGY OF YUCATAN; OR, A TRUE EXPOSITION OF THE METHOD USED BY THE INDIANS FOR COMPUTING TIME.—Translated from the Manuscript of Dan Juan Pio Perez, Gefe Politico of Peto, Yucatan.