The New Student's Reference Work/Vol III:18

O — Octopus	Oder — Old	Oldham — Oneida	Onion — Orchids
O Oak Oak-Apples Oakland Cal. Oasis Oats Oaxaca Obelisk Oberammergau Oberlin, O. Obi Obrien, Most Rev. Cornelius Observatory Obsidian Ocean-Currents Oceania Ocean-Routes Ocelot O'Connell, Daniel O'Connor, Thomas Power Oconto, Wis. Octavia Octavian October Octopus	Oder Odessa Œdipus Oersted, Hans Christian Offenbach, Jacques Ogden, Robert Curtis Ogden, Utah Ogdensburg, N. Y. Oglesby, Richard James Oglethorpe, James Edward Ogowe Ohio Ohio (river) Ohio State University Ohm, Georg Simon Oil City, Pa. Oil-Wells Oils Ojibways Oka Okhotsk, Sea of Oklahoma Oklahoma City, Okla. Olaf, Saint Old Curiosity Shop	Oldham Old Point Comfort Old South Church Oleander Ole Bull Olean, N. Y. Oleomargarine Olga, St. Oliphant, Mrs. Margaret (Wilson) Olive Oliver Twist Olives, Mount of Olmsted, Frederick Law Olney, Richard Olympia, Wash. Olympic Games Olympus, Mount Omaha, Neb. Omahas Omar I, Abu Hafsah Ibn ul Khattab Omar Khayyam O'Meara, The Reverend Thomas Robert Omnibus Bill, The Onega, Lake Oneida, Lake	Onion Ontario, Can. Ontario Agricultural College, Guelph, Can. Ontario, Lake Onyx Oögonium Oösphere Oöspore Opera-Glass Ophir Opium Oporto Opossum Optics Oracle Oran Orange Orange, N. J. Orangemen Orange River Orange River Colony Orang-Utan Oratorio Orchardson, William Quiller Orchids