18 ENCYCLOPAEDIA BRITANXICA. PRINCIPAL SUBJECTS. 



VOLUME XVI. 



NAVIGATION. By Rev. Joseph Woolley, LL.D., F.R.A.S., 



late Principal of the School of Mathematics and Naval Construction at 

 Portsmouth. 



NAVIGATION. Inland. By David Stevenson, F.R.S.E., 

 M.I.C.E., etc. 



NAVY and NORWAY. By John Barrow, Author of " Excur- 

 sions in the North of Europe," etc. 



NEANDER. By John Tdlloch, D.D , Principal and Primarius 

 Professor of Divinity, St. Mary's College, St. Andrews. 



NELSON. By James Browne, LL.D. 



NEPAUL. By Edward Thornton, Author of " Gazetteer of 

 India." 



NEUTRALITY. By J. R. M'Culloch. 



NEWSPAPERS. By Edward Edwards, Author of the Article 



" Libraries." 



NEWTON (Sir ISAAC), and OPTICS. By Sir David Brewster. 



NEW YORK. By Freeman Hunt, late Editor of " Hunt's Mer- 

 chants' Magazine," New York, U.S. 



NEW ZEALAND. By Rev. W. B. Boyce. 



NICARAGUA. By E. G. Squier, Author of the Article " Mos- 



quito Shore." 



NIEBUHR. By Rev. Charles Merivale, B.D., Author of a 



" History of the Romans under the Empire," etc. 



NILE. By George Melly, Liverpool. 



NINEVEH. By A. H. Layard. 



NORTH-WESTERN PROVINCES OF INDIA. By E. B. East- 



wick, Professor of Hindustani and Teluga, East India College, Haileybury. 



NUMISMATICS. By R. S. Poole, Author of the Articles " Egypt " 



and " Hieroglyphics." 



ODONTOLOGY and OKEN. By Richard Owen, F.R.S., Super- 

 intendent of the Departments of Natural History, British Museum. 



(EHLENSCHLAGER. By Theodore.Martin. 



OHIO. By J. D. B. De Bow, Professor of Political Economy in 



the University of Louisiana, and Superintendent of United States Census. 



OILS and OPIUM. By Professor T. C. Archer, Honorary Direc- 

 tor of the Museums of Natural History and Applied Science, Liverpool Royal 

 Institution. 



ORDINATION. By W. L. Alexander, D.D. 



ORFILA. By Robert Ciiristison, M.D., Professor of Materia 



Medica in the University of Edinburgh. 



ORGAN. By George Farquiiar Graham, Author of the Article 

 " Music." 



ORNITHOLOGY. By James Wilson, Author of the Article 

 " Mammalia." 



