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Presents. 
SCHMIDT (Carl von.) Charakteristik der Epidemischen Cholera. 8vo. 
Leipzig und Milan 1850. 
SCORESBY (Rev. W.) My Father ; being Records of the Adventurous Life 
of the late William Scoresby, Esq., of Whitby. 8vo. London 1851. 
SEDGWICK (Rev. A.) A Discourse on the Studies of the University of 
Cambridge. 8vo. London and Cambridge 1850. 
SMEE (A.) The Process of Thought adapted to Words and Language. 8vo. 
London 1851. 
SMYTH (C. P.) On a Method of Cooling the Air of Rooms in Tropical 
Climates. 4to. London 1850. 
Astronomical Observations made at the Royal Observatory, 
Edinburgh. Vol. IX. S>\o. Edinburgh 1850. 
SMYTH (Capt. W. H.) Address at the Anniversary Meeting of the Royal 
Geographical Society, 1850. 
1 Supplement to the Description of an Astrological 
Clock, belonging to the Society of Antiquaries. 4to. London 1851. 
SILLIMAN (B.) Optical Examination of several American Micas. 8vo. New- 
haven 1850. 
SORBY (H. C.) On the Tetramorphism of Carbon. 8vo. Edinburgh 1851. 
On the Microscopical Structure of the Calcareous Grit of 
the Yorkshire Coast. 8vo. Dublin 1850. 
STRATFORD (Lieut.) The Nautical Almanac for 1854. 
STURGEON (W.) Scientific Researches in Electricity, Magnetism, &c. &c. 
4to. Bury 1850. 
THIERSCH (Fr. v.) Rede zur Vorfeyer des hohen Geburtsfestes Sr. Majestat 
des Konigs Maximilian II. von Bayern. 4to. 
Ueber die praktische Seite Wissenschaftlicher Thatigkeit. 
4to. Munehen 1849. 
THOMSON (William.) Remarks on the Dentition of British Pulmonifera. 
8 VO. 1851. 
TORTOLINI (Barnaba.) Elementi di Calcolo Infinitesimale. Tomo I. 8vo. 
Roma 1844. 
Rappresentazione Geometrica delle Funzioni Ellit- 
tiche di terza specie. 8vo. Roma 1844. 
— Annali di Scienze Matematiche e Fisiche. January 
to December 1850; January to March 1851. 
De Formatione quarundam Aiquationum Alge- 
braicarum. 4to. Bonordoe 1848. 
Applicazioni dei Trascendenti Ellittici, &c. 4to. 
Modena 1849. 
TURNER (H. N.) On the Evidences of Affinity afibrded by the Skull in the 
Ungulate Mammalia. 8vo. 1850. 
TWINING (Elizabeth.) Illustrations of the Natural Orders of Plants. Parts 7 
to 10. fol. London 1849. 
VASSALLO (C.) Dei Monument! Antichi nel Gruppo di Malta. 8vo. 
Valletta 1850. 
W’ACKENRODER (H.) De Cerevisise vera mixtione et Indole Chemica, etc. 
8 VO. Jenm 1850. 
Donors. 
The Author. 
The Author. 
The Author. 
The Author. 
The Author. 
The Observatory. 
The Author. 
The Author. 
The Author. 
The Editor. 
The Author. 
The Academy of Sciences, 
Munich. 
The Author. 
The Author. 
The Author. 
R. Twining, Esq., F.R.S. 
The Author. 
The Author. 
