[ 17 ] 
Presents. 
BROOKE (C., F.R.S.) The Elements of Natural Philosophy, based on the Trea- 
tise by G. Bird. 8vo. London 1867. 
BROUN (J. A., F.R.S.) On the Diurnal Variation of the Magnetic Declination 
at Trevandrum, near the Magnetic Equator, and in both Hemispheres. 4to. 
Edinburgh 1867. 
BRUHN S (Dr . 0. ) Resultate aus den meteorologischen Beobachtungen angestellt 
an mehreren Orten im Konigreich Sachsen in den Jahren 1826 bis 1861 und 
an den fiinf-und-zwanzig kon. sachsischen Stationen im Jahre 1866. 
Dritter Jahrgang. 4to. Leipzig 1868. 
BULLMORE (W. K.) Cornish Fauna, a short Account of all the Animals found 
in the County. 8vo. Truro 1867. 
BURMEISTER (G) Anales del Museo Publico de Buenos Aires. Entrega 2 & 4. 
4to. Buenos Aires 1867. 
BURT (T. S., F.R.S.) Miscellaneous Papers, chiefly on Scientilie Subjects. 
Vol. III. Part 3. 8vo. London 1868. 
CHEVREUL (M. E., For. Mem. R.S.) Notes Historiques sur la nature imme- 
diate de l’Amer de Welter et de l’Amer au Minimum. 4to. Paris 1864. 
Considerations sur l’Histoire de la par- 
tie de la Medecine qui coneerne la prescription des remedes. 4to. Paris 
1865. 
— Memoire sur des Phenomenes d’Affl- 
nites Capillaires. 4to. Paris 1866. 
Histoire des Connaissances Chimiques. 
Tome I. 8vo. Paris 1866. 
— Rapport sur ses Cours du Museum 
d’histoire naturelle en general et en particulier sur son cours de 1866. 8vo. 
— Societe Imperiale et Centrale d’ Agri- 
culture de France. Annexe au Proces-Verbal de la Seance du 10 Juillet 
1867. 8vo. Paris. 
Des Arts qui parlent aux Yeux au 
moyen de solides colores d’une'etendue sensible, et en particulier des Arts 
du Tapissier des Gobelins et du Tapissier de la Savonnerie. 4to. Paris 
1867. 
Examen Critique au point de vue de 
l’Histoire de la Chimie d’un eerit alchimique intitule, Artefii Clavis Majoris 
Sapientise. 4to. Paris 1867. 
CLAUSIUS (R.) Abhandlungen iiber die meehanische Warmetheorie. Abthei- 
lung 1, 2. 8yo, Braunschweig 1864—67. 
The Mechanical Theory of Heat, with its applications to the 
Steam-Engine and to the Physical Properties of Bodies, edited by T. A. 
Hirst, F.R.S. 8vo. London 1867. 
COOKE (Rev. T. F.) Authorship of the Practical Electric Telegraph of Great 
Britain, or the Brunei Award vindicated. 8vo. Bath 1868. 
COOKE (W. F.) The Electric Telegraph : was it invented by Professor Wheat- 
stone ? 2 vols. 8vo. London 1856-57, and 8vo. London 1866. 
CORNELISSEN ( J. E.) On the Temperature of the Sea at the Surface near the 
South-Point of Africa. 4to. Utrecht. 
CROMPTON (Dr.) On the Portraits of Sir Isaac Newton. 8vo. Manchester. 
Donors. 
The Author. 
The Author. 
The Author. 
The Author. 
The Museum, 
The Author; 
The Author. 
The Author. 
Mr. Van Voorst. 
The Author. 
The Author. 
The Author. 
The Author, 
MDCCCLXYITI. 
(1 
