sons of both sexes, habited in the peculiar garb of
students, like our own. We advanced slowly and noiselessly, until we
reached two vacant places, prepared evidently beforehand for us. Our
entrance was not noticed by the classes, nor by those whom I afterwards
recognized as teachers. All seemed intent upon the problem before them,
and evinced no curiosity to observe the new comers. My own curiosity at
this moment was intense, and had it not been for the prudent cautions
constantly given me by Pio, by touching my robes or my feet, an exposure
most probably would have occurred the first night of my initiation, and
the narrative of these adventures never been written.

My presence of mind, however, soon came to my assistance, and before the
evening was over, I had, by shrewdly noticing the conduct of others,
shaped my own into perfect conformity with theirs, and rendered
detection next to impossible.

It now becomes necessary to digress a moment from the thread of my
story, and give an accurate description of the persons I beheld around
me, the chamber in which we were gathered, and the peculiar mode of
instruction pursued by the sages.

The scholars were mostly young men and women, averaging in age about
twenty years. They all wore the emblem of royalty, which I at once
recognized in the _panache_ of Quezale plumes that graced their heads.
They stood in semi-circular rows, the platform rising as they receded
from the staging in front, like seats in an amphitheatre. Upon the stage
were seated five individuals--two of the male, and three of the female
sex. An old man was standing up, near the edge of the stage, holding in
his hands two very cunningly-constructed instruments. At the back of the
stage, a very large, smooth tablet of black marble was inserted in the
wall, and a royal personage stood near it, upon one side, with a common
piece of chalk in his right hand, and a cotton napkin in the left. This
reminded me but too truthfully of the fourth book of Euclid and Nassau
Hall; and I was again reminded of the great mathematician before the
assembly broke up, and of his reply to that King of Sicily, who inquired
if there were no easy way of acquiring mathematics. "None, your
Highness," replied the philosopher; "there is no royal road to
learning." Labor, I soon found, was the only price, even amongst the
Aztecs, at which knowledge could be bought. Each student was furnished
with the same species of instruments which the