97 



Proceedings of the Royal Irish Academy, for the Year 1842-3. 

 Part VII. Dublin, 1844. 8vo. — From the Academy. 



The American Journal of Science and Arts. Conducted by Profes- 

 sor Silliman, and Benjamin Silliman, Jr. Vol. XLVII. No. 1. 

 July, 1844. 8vo. — From the Editors. 



The African Repository and Colonial Journal. July and August, 

 1844. Vol. XX. Nos. 7 and 8. 8vo. — From the American 

 Colonization Society. 



Journal of the Franklin Institute of the State of Pennsylvania. Third 

 Series. Vol. VIII. August, 1844. No. 2. &yo.— From Dr. 

 R. M. Patterson. 



The Medical News and Library. Vol. II. August, 1844. No. 20. 

 8vo. — From Lea <Sf Blanchard. 



A Theory of the Structure of the Sidereal Heavens, including an Ex- 

 planation of the Phenomena of Via Lactea and Nebulae; founded 

 on a new Astronomical Doctrine ; being a General Explication of 

 the Astral Collocations upon Geometrical Principles. Part the 

 First. London, 1842. 4to. Anon. — From the Author. 



An Elementary Treatise on Mineralogy : comprising an Introduction 

 to the Science. By William Phillips, F. L. S. etc. Fifth Edition, 

 from the Fourth London Edition. By Francis Alger. Boston, 

 1844. 8vo. — From the Editor, F. Alger. 



The Practice of Medicine : a Treatise on Special Pathology and 

 Therapeutics. By Robley Dunglison, M. D., Professor of the 

 Institutes of Medicine in Jefferson Medical College, Philadelphia ; 

 Secretary of the American Philosophical Society, etc. etc. Second 

 Edition. Philadelphia, 1844. 2 Vols. 8vo. — From the Author. 



Human Health; or the Influence of Atmosphere and Locality; 

 Change of Air and Climate; Seasons; Food; Clothing, etc. etc.; 

 constituting Elements of Hygiene. By Robley Dunglison, M.D., 

 etc. etc. A new Edition, with many Modifications and Additions. 

 Philadelphia, 1844. 8vo. — From the Author, 



An Autograph Letter from the Rev. Nevil Maskelyne, B.D., F.R.S., 

 Astronomer Royal, to the Rev. Dr. Ewing, formerly Provost of 

 the University of Pennsylvania, dated Greenwich, August 4th, 

 1775, on the subject of a Project for erecting an Observatory at 

 Philadelphia. — From Harrison Hall, Esq. 



ADDITI0^'S TO THE LIBEAEY BY PUKCHASE. 



Philosophical Transactions of the Royal Society of London. For the 

 Year 1808. Part 2. 4to. N. B. The first part of this Vol. is 

 wanting. 



