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op last Van den Koning door C. J. Temminck. Botanie. Geredigeerd door J. A. Susanna, Gedrukt 
door J. G. la Lau. Leiden, 1839—1842. Folio. 
Rippett, (J. L.) The Constitution of Matter and Laws of Motion, as deducible from, and explanatory of, the 
Physical Phenomena of Nature. By J. L. Riddell, M.D. From the New Orleans Journal of 
Medicine. 
Riveway, (G. W.) The Literary Age. Reynell Coates, M.D., Editor. Published by G. W. Ridgway. Nos. 
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Report to the Board of Managers of the Schuylkill Navigation Company, on the Improvement of the Schuyl- 
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An Account of the Portage Rail Road over the Allegheny Mountain, in Pennsylvania. By 8. W. Roberts, 
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—— Report of the President and Managers of the Schuylkill Navigation Company to the Stockholders, January 
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An Address on the Recent Progress of Geological Research in the United States. Delivered at the Fifth 
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Rurrin, (Ep.) An Essay on Caleareous Manures. Third Edition. By Edmund Ruffin. Petersburg, Va., 1842. 8vo. 
Rumger, (C.) Mittlere Oerter von 12,000 Fix Sternem, fiir den Anfang von 1836, abgeleitet aus den Beobach- 
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Scurépzr, (J. H.) Kongl. Vetenskaps-Societeten i Upsala. Dess Stiftelse, utbildning och verksamhet Beriittelse 
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Incunabula Artis " 
Typographiez in Suecia. Quibus Sollemnia Inaugurationis Philosophice a condita Aca- 
demia Upsaliensi Septuagesime quinte celebranda Litterarum Patronis Hospitibus Patribus civibus- 
que Academicis et urbicis. Indicit legitime constitutus promotor Johannes Henricus Schréder, 
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Scorespy, (Rev. Wu.) Magnetical Investigations. By the Rev. Wm. Scoresby, D.D., F.R.S., etc., etc, Part I, 
London, 1839. 8vo. Part II. London, 1848. 8vo. 
—— Remarks on the Probability of Reaching the North Pole. By the Rev. William Scoresby. From the 
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