39$ New Publicatwns. 



5. On the Medicinal Properties of Bebeerii Bark. By Douglas 

 Maclagan, M.D. 8vo. 1843. 



6. Bulletin de la Societe Geologique de France, T. xiv,, f. 

 21-24. (20 Mars— 17 Avril 1843.) 



7. Die ausgleichungs — Rechnungen der practischen Geometrie, 

 &c. Von C. L. Gerling. Hamburg and Gotha. F. and A. 

 Perthes. 1843. 



8. Transactions of the American Philosopliical Society, held at 

 Philadelphia, for promoting Useful Knowledge'. Vol. viii. Parts 

 I. II. III. New Series, 4to, pp. 357. Philadelphia, 1841-2-3. 



9. Proceedings of the American Philosophical Society for No- 

 vember and December 1842, and January, February, and March 

 1843. 8vo. 



10. Description of the Skeleton of an extinct Gigantic Sloth, 

 Mylodon robuslus^ Owen, with Observations on the Osteology, 

 Natural Affinities, and probable Habits of the Megatherioid Qua- 

 drupeds in general, with numerous plates. By Bichard Owen, F.B.S., 

 &c. &c. John Van Voorst, 1 Paternoster Bow, London. 



11. Applications of the Electric Fluid to the Useful Arts. By 

 Mr Alex, Bain ; with a Vindication of his Claim to be the First 

 Inventor of the Electro-Magnetic Printing Telegraph, and also of 

 the Electro-Magnetic Clock. By John Finlaison, Esq., Actuary of 

 the National Debt Office, and Government Calculator. 8vo, pp. 

 127, with plates. London, Chapman and Hall, 186 Strand. 1843. 



12. Principles of Mathematical Geography, comprehending a 

 Theoretical and Practical Explanation of the Construction of Maps, 

 with rules for the Formation of the various kinds of Map-Frojec- 

 tions, and an Appendix on Physical Geography. By W. Hughes, 

 F.G.S., Professor of Geography in the College of Civil Engineers, 

 &c. &c. London, John Weale. 12mo, pp. 157, with maps, &c. 

 &c. This useful volume, which we recommend to the aitentio7i of 

 our readerSy we owe to Mr Hughes, a young gentleman, luho has al- 

 ready raised himself to eminence as a map-constructor and geogra- 

 pher^ and who promises ere long to occupy a prominent position 

 among the geographers of our country. 



13. The American Journal of Science and Arts, conducted by 

 Professor Silliman, and Benjamin Silliman jun., up to July 1843. 



