elucidation--we mean the "Porisms." There are so many questions
arising out of this subject, respecting the development of the Grecian
intellect, that a full discussion of them is no easy task; especially
of those arising out of the conflicting testimonies furnished by
history, and by the internal evidences contained in the existing works
of the "fathers of Geometry." We certainly anticipate, from the known
character of the minds now engaged in this work, that some conclusive
evidence as to the state of geometry anterior to the time of Euclid
will be elicited by Messrs. Potts and Davies. The analysis of the
writings of all the authors who have treated on the Porism, will form
a subject of interest not only for its assigning to every author his
fair share of credit for his contributions towards perfecting the
poristic method; but for that _critical discrimination of principles_,
which constitutes one of the marked features of Mr. Davies's writings
in the archæology of geometry. We shall be glad if his slight
notice of the intended work shall bring some accession of aid to the
undertaking in the form of subscriptions: as upon adequate support,
it appears, must depend whether the work shall go to press, or the
project be abandoned.

We have received the following Catalogues:--Thomas Thorpe's (13.
Henrietta Street) General Catalogue of very Choice, Curious, Rare,
and most Interesting Books recently purchased, including some hundred
articles of the utmost rarity. Williams and Norgate's (14. Henrietta
Street) No. 24. of German Book Circular, a Quarterly List of the
principal New Publications on the Continent; C.J. Stewart's (11. King
William Street, West Strand) Catalogue of Dogmatical, Polemical, and
Ascetical Theology.

[9] We find at page 200, an Order of the Council, dated Dec. 5.