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Presents. 
PORRO (M.) Raies Longitudinales du Spectre, ^to. Paris 1852. 
PORTLOCK (Lt. Col. J. E.) Annual Address delivered before the Geological 
Society of Dublin. 8vo. Dublin 1852. 
Memoir of the Life of Major-General Colby, 
F.R.S., &c. &c. 8vo. London 1853. 
PORTRAITS 
Engraved Portraits of P. G. Dandelin and L. V. Raoul. 
POUCHET (F. A.) Histoire des Sciences Naturelles au Moyen-Age, &c. 
8vo. Paris 1853. 
PURSLO (J.) The Government of the Heavens. 8vo. Edinburgh 1852. 
QUETELET (A.) Sur I’Electricite de I’Air. 8vo. 
Observations des Phenomenes Periodiques pour I’annee 
1850. 4to; and pour I’annee 1851. 
SurleClimatdelaBelgique. 5“® partie. ito-^ErMTe/Zes 1852. 
Sur I’Electricite de’l’Air, &c. 8vo. 
Sur les Tables de Mortalite et de Population, ^to. 
Sur les Temps des Revolutions des Satellites de Jupiter et 
de Saturne, Note. 8vo. 
Annales de I’Observatoire Royale de Bruxelles. Tom. 
VIII. IX. 4to. Bruxelles 1852. 
Annuaire 1852. 19° annee. 8vo. 
QUETELET (E.) Recherches sur les Medianes. 4to. 
RENNIE (Sir J.) On the Theory, Construction and Formation of British and 
Foreign Harbours. Parts 16 to 19. 
REICH (F.) Neue Versuche mit der Drehwaage. 4to. Leipzig 1852. 
RINK (H.) De Danske Handelsdistrikter i Nordgroenland. Forste deel. 8vo. 
Kjdbenhavn 1852. 
Om Monopolhandelen paa Greenland. 8vo. Kjdbenhavn 1852. 
ROBERTS (Lieut. Julius.) Local Attraction ; its Effects and Obviation, &c. 
8vo. Portsea 1 852. 
ROBINSON (Rev. T. R.) Experimental Researches on the Lifting Power of 
the Electro-Magnet. 4to. Dublin 1852. 
RUSCHENBERGER (W. S. W.) A Notice of the Origin, Progress, and 
Present Condition of the Academy of Natural Sciences of Philadelphia. 
8vo. Philadelphia 1852. 
SABINE (Col. E.) Observations made at the Magnetical and Meteorological 
Observatory at Hobarton. 4to. London 1853. 
SADI (Muslihu’d-diu.) The Gulistan, or Rose-Garden. Translated by Ed- 
ward B. Eastwick, Esq., F.R.S. 8vo. Hertford, 1852. 
SCHMIDT (J. F. J.) Beobachtung der Totalen Sonnenfinsterniss vom 28sten 
Juli 1851, zu Rastenburg in Ostpreussen. 
SCHOOLCRAFT (H. R.) Information respecting the History, Condition, 
and Prospects of the Indian Tribes of the United States. Part 2. 1852. 4to. 
Philadelphia 1852. 
SCHWEIZER (G.) Bericht an die Kaiserlich Russisch Geographische Gesell- 
schaft iiber die Expedition nach Machnowka, &c. 8vo. Moskau 1851. 
Donors. 
M. Zantedeschi. 
The Author. 
The Author. 
The Academy of Sciences of 
Belgium. 
The Author. 
The Author. 
The Author. 
The Observatory, Brussels. 
The Author. 
The Author. 
The Royal Saxon Society of 
Sciences. 
The Author, per Dr. Wal- 
lich, F.R.S. 
The Author. 
The Author. 
The Author. 
H.M. Government. 
The Translator. 
W. A. Argelander. 
The United States Govern- 
ment. 
The Observatory, Moscow. 
