PHILOSOPHICAL SOCIETY OF WASHINGTON. 91 



Young, Thos. : A course of Lectures on Natural Philosophy, 

 etc. 2 vols. ISOT. 4to.; Vol. II., pp. 8Y to 520, consists of'a 

 "Systematic Catalogue of Works relating to Natural Philoso- 

 phy [Astronomy], etc." 



The comments by the distinguished author of this Bibliography 

 will always render this work classic. In some of the depart- 

 ments of astronomy the catalogue of 53 pages is almost com- 

 plete to 1800. A most complete index renders it easy of 

 consultation. , 



SoHNCKE, L. A.: Bibliotheca mathematica : Verzeichniss der 

 Bilcher iiber . . . Astronomie welche in Deutschland tnid 

 dem Auslande vom Jahre 1830 bis 1854 erschienen sind. 

 1854. 8vo. 



This work is principally concerned with mathematics, but it 

 includes a section on Astronomy and Geodesy. The order of 

 arrangement is alphabetical by authors ; books and separately 

 published memoirs are registered under authors' names. An 

 alphabetical inde.x of subjects is added, each subject containing 

 authors' names and references to the main body of the work. 



Schumacher, H. C. : Catalogue des Livres composant la biblio- 

 thdque de feu H. G. Schumacher. Part I. [Mathematics, As- 

 tronomy, etc.] 1855. 8vo., pp. 147. 



This is a catalogue of the best astronomical library ever pos- 

 sessed by a private individual, and is of value in many cases. 

 In this connection may be mentioned similar catalogues of the 

 libraries of astronomers, prepared by the various booksellers, as 

 those of the libraries of Argelander, Olupsen, etc., and also 

 the periodical subject catalogues of Friedlander, Asher & Co., 

 KoHLER and others. These are often quite full. 



Otto v. Struve: Catalogus Librorum in Bibliotheca Speculas 

 Pulcovensis. 8vo. 1858. 

 This consists of an elaborate catalogue of all the works con- 

 tained in the unrivalled astronomical library of the Pulkova Ob- 

 servatory up to 1858. It comprises — 



1st. 4113 titles of works; 7625 volumes. 

 2d. 143 celestial maps, charts, etc. 

 od. 14,634 smaller works, or dissertations. 

 In this work the memoirs are arranged by subjects and chro- 

 nologically in each subject, without notes. It was edited by 

 Otto Struve with great care, and practically completes the bib- 

 liography of Astronomy, Mathematics, Geodesy, and allied sci- 

 ences to the date of publication, and will long remain an acknow- 

 ledged classic on its subject. It is continued in MS. at the 

 Pulkova Observatory, and there is reason to hope for the pub- 

 lication of a supplement shortly. 



