e U.S. Report on Libraries (pp. 161-170).
He writes, "Law books may be classified generally as
follows: Reports, Treatises, Statute Law. The practice of
reporting the decisions of the Judges began in the reign of
Edward I., and from that time we have a series of judicial
reports of those decisions. In the time of Lord Bacon, these
reports extended to fifty or sixty volumes. During the two
hundred and fifty years that have passed since then, nothing
has been done by way of revision or expurgation; but these
publications have been constantly increasing, so that at
the close of the year 1874 the published volumes of reports
were as follows: English, 1350 volumes; Irish, 175 volumes;
Scotch, 225 volumes; Canadian, 135 volumes; American, 2400
volumes. With respect to treatises (including law
periodicals and digests), and without including more than
one edition of the same work, it is safe to say that a fair
collection would embrace at least 2000 volumes. The statute
law of the United States, if confined to the general or
revised statutes and codes, may be brought within 100
volumes. If, however, the sessional acts be included, the
collection would amount to over 1500 volumes. It is thus
seen that a fairly complete law library would embrace more
than 7000 volumes, which could not be placed upon its
shelves for less than $50,000."

_Law._--There is a useful list of legal bibliographies in
the "Hand-list of Bibliographies in the Reading-room of the
British Museum" (pp. 40-44). Clarke's _Bibliotheca Legum_,
which was compiled by Hartwell Horne (1819), is a valuable
work. Marvin's _Legal Bibliography_, which was published at
Philadelphia in 1847, contains 800 pages. The Catalogue of
the Law Library in the New York State Library (1856), forms
a useful guide to the subject, and Herbert G. Sweet's
"Complete Catalogue of Modern Law Books" is one of the
latest catalogues of authority.

_Mathematics._--A really good bibliography of Mathematics is
still wanting. The following books, however, all from
Germany, are useful.

_Mathematics._--MURHARD (F.W.A.). Bibliotheca Mathematica.
Lipsiae, 1797-1804. 4 vols.

---- ROGG (J.). Handbuch der Mathematischen Literatur.
Tuebingen, 1830.

---- SOHNCKE (L.A.). Bibliotheca Mathematica. 1