[ 10 ] 
Presents. 
MATZKA (W.) Versuch einer richtigen Lehre von der Realitaet der vor- 
geblich imaginaren Grdssen der Algebra, oder einer Grundlebre von der 
Ablenkung algebraisclier Grossenbeziehungen unternommen. 4to. Frag 
1850. 
MAURY (Lieut.) Circular prepared by direction of the Hon. W. B. Preston, 
in relation to the Astronomical Expedition to Chile. 4to. Washington ISiO. 
MAYO (T.) Outlines of Medical Proof, revised and corrected. 8vo. London 
1850. 
MIERS (John.) Illustrations of South American Plants. Parts 1 — 4. 4to. 
London 1846. 
MINERVINI (G.) Dell’ Epilessia. 8vo. Napoli 1847. 
MINERVINI (R.) Soluzione di un Problema Geometrico Piano della Classe 
de’ Problem! delta da’ Geometri Greci vevtjeuiv delle Inclinazioni. 8vo. 
Napoli 1849. 
MISCELLANEOUS 
The original Model of the Safety Lamp made by Sir Humphry Davy’s own 
hands, and given by him to James Prince Lee, D.D., Lord Bishop of Man- 
chestei’. 
MOON (R.) The New Equation in Hydrodynamics. 8vo. Cambridge 1850. 
MORTON (S. G.) Catalogue of Skulls of Man and the Inferior Animals. 
8vo. Philadelphia 1849. 
Observations on the Size of the Brain in various races 
and families of Man. 8vo. Philadelphia 1849. 
Additional Observations on a new living species of Hip- 
popotamus. 4to. Philadelphia 1849. 
MiiLLER (Dr.) (Editor.) Rig-Veda-Sanhita. The Sacred Hymns of the 
Brahmans. Vol. 1. 4io. London 1849. 
NICOL (James.) Manual of Mineralogy. 8vo. Edinburgh 1849. 
OHM (G. S.) Elemente der Analytischen-Geometrie im Raume am schief- 
winkeligen Coordinatensysteme. 4to. Nurnberg 1849. 
ORLEBAR (A. B.) Observations made at the Magnetical and Meteorolo- 
gical Observatory at Bombay in 1846. 4to. Bombay 1849. 
OVEREND (G.) Extraordinary New Steam-Engines. 8vo. 
PARAVEY (C. de.) Refutation de I’Opinion emise par M. Jomard, que les 
Peuples de I’Amerique n’ont jamais eu aucun rapport avec ceux de I’Asie. 
8 VO. Paris 1848. 
Memoire sur la Decouverte tres-ancienne en Asie etdans 
rindo- Perse de la Poudre a Canon et des Armes a Feu. 8vo. P«7 ts1850. 
PARKER (W.) The Physiological and Scientific Treatment of Cholera. 8vo. 
London 1849. 
PARLATORE (Filippo.) Viaggio alia Catena del Monte Bianco e al Gran 
San Bernardo. 8vo. Firenze 1850. 
Flora Italiana. Fasc. 1. 8vo. /Yraize 1848. 
PERIGAL (H.) Notes on Revolution and Rotation with reference to the 
Motions of the Moon and of the Earth. 8vo. London 1846-9. 
Contributions to Kinematics. 
PETERS (C. A. F.) liber Professor Madler’s Untersuchungen fiber die 
Eigenen Bewegungen der Fixsterne. 4to. St. Petersburg 1848. 
Donors. 
The Author. 
Lieut. Gilliss. 
The Author. 
The Author. 
The Author. 
The Author. 
Joseph Hodgson, Esq., 
F.R.S. 
The Author. 
The Author. 
The East India Company. 
The Author. 
The Author. 
The Hon. Directors of the 
East India Company. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
