ffice, and it is reported that 48,000 titles are now in the
office. There have been several articles on this subject in
_Symons's Meteorological Magazine_, the last being in the
number for December, 1885.

_Mineralogy._--DANA (J.D.). Bibliography of Mineralogy.
1881. 8vo.

_Mining._--Wigan Free Public Library Index Catalogue of
Books and Papers relating to Mining, Metallurgy, and
Manufactures. By Henry Tennyson Folkard, Librarian.
Southport, 1880. Roy. 8vo.

_Motion (Perpetual)._--Perpetuum Mobile; or, search for
Self-Motive Power during the 17th, 18th, and 19th centuries,
illustrated from various authentic sources in papers,
essays, letters, paragraphs, and numerous Patent
Specifications, with an Introductory Essay. By Henry Dircks,
C.E. London, 1861. Sm. 8vo. Second Series. London, 1870. Sm.
8vo.

_Music._--ENGEL (C.). The Literature of National Music.
London, 1879. 8vo.

---- Catalogue of the Library of the Sacred Harmonic
Society. A new edition [by W.H. Husk]. London, 1872. 8vo.

---- RIMBAULT (F.). Bibliotheca Madrigaliana, a
Bibliographical Account of the Musical and Poetical Works
published in England during the 16th and 17th centuries,
under the titles of Madrigals, Ballets, Ayres, Canzonets,
etc. London, 1847. 8vo.

There are bibliographies of the subject in F.L. Kilter's
History of Music, London, 1876, and F. Clement, Histoire
generale de la Musique Religieuse. Paris, 1861.

_Natural History._--Dryander's Catalogue of Sir Joseph
Banks's Library, now in the British Museum, is the most
famous bibliography of this subject, although made so many
years ago. It consists of 5 vols. 8vo. (1798-1800). Vol. 1,
General Writers; Vol. 2, Zoology; Vol. 3, Botany; Vol. 4,
Mineralogy; Vol. 5, Supplement.

_Natural History._--ENGELMANN (W.). Bibliotheca
Historico-Naturalis. Leipzig, 1846.

---- ZUCKOLD (E.A.). Bibliotheca Historico-Naturalis,
Physico-Chemica et Mathematica. Goettingen, 1852.

---- See _Zoology_.

_Philology._--MARSDEN (W.) Bibliotheca Marsdenia,
Philologica et Orientalis. London, 1827. 4to.

---- ENGELMANN (W.). Bibliotheca Philologica. Leipzig, 1853.

---- See _Dictionaries_.

_Political Economy._--MCCULLOCH (J.R.) The Literature of
Political Economy, London, 1845.-