[64] HIDALGO (D.). Diccionario general de Bibliografia Española. Madrid, 1862-79. 6 vols. 8vo.
[65] Boletin de la Libreria. Año 1. 1873. Madrid, 1874. 8vo. In progress.
[66] BARBOSA MACHADO (D.). Bibliotheca Lusitana, historica, critica e cronologica. Na qual se comprehende a noticia dos authores Portuguezes, e das obras que compuserão. Lisboa, 1741-59. 4 vols. Folio.
[67] SILVA (J.F. DA). Diccionario bibliographico Portuguez. Lisboa, 1858-70. Tom. 1-9. 8vo.
[68] A Dictionary of the Anonymous and Pseudonymous Literature of Great Britain, including the works of Foreigners written in or translated into the English Language. By the late Samuel Halkett, and the late Rev. John Laing. Edinburgh (William Paterson), 1882-85. Vols. 1, 2, 3 (to 'Tis).
Bibliographies of special subjects are more useful than any other books in the formation of a library. The articles in the new edition of the _Encyclopædia Britannica_ will be found valuable for this purpose, but those who wish for fuller information must refer to Dr. Julius Petzholdt's elaborate _Bibliotheca Bibliographica_ (Leipzig, 1866), or to the _Bibliographie des Bibliographies_ of M. Léon Vallée (Paris, 1885). The late Mr. Cornelius Walford contributed a paper "On Special Collections of Books" to the Transactions of the Conference of Librarians, 1877 (pp. 45-49), in which he specially referred to the subject of Insurance.
In the present chapter I propose to refer to some of the most useful bibliographies, but to save space the full titles will not be given, and this is the less necessary as they can mostly be found in the above books or in that useful little volume we owe to the authorities of the British Museum--"Hand-list of Bibliographies, Classified Catalogues, and Indexes placed in the Reading-room," 1881.
_Agriculture._--Weston's Tracts on Practical Agriculture and Gardening (1773), contains a Chronological Catalogue of English Authors, and Donaldson's Agricultural Biography (1854) brings the subject down to a later date. Victor Donatien de Musset-Pathay published a _Bibliographie Agronomique_ in 1810, and Loudon's _Encyclopædia of Agriculture_ contains the Literature and Bibliography of Agriculture, British, French, German, and American.