On these occasions, in order to preserve the deliberations from the public, the most strict secrecy was observed, and women were entirely excluded.
The Dinnseanchus, a topographical work, compiled in the twelfth century from ancient MSS., is the principal source of information on this subject.

Dr.Petrie, in his famous _Essay_, has given both the original and translation of this tract, and of other documents on the same subject; and he remarks how exactly the accounts given by the poet historians coincide with the remains which even now exist.

In fact, each site has been ascertained with precise accuracy--an accuracy which should very much enhance our appreciation of the value of our ancient histories.
The well _Neamhnach_ was first identified.

Tradition asserts that the first mill[174] erected in Ireland was turned by the stream which flowed from it, and even at the present day a mill is still worked there.

The situation of the _Rath-na-Riogh_ was then easily ascertained.