Oldbuck, Jonathan.Antiquary, Scott. The character whose whimsies gave name to the novel. He is represented as devoted to the study and accumulation of old coins, medals, and relics. He is irritable, sarcastic, and cynical from an early disappointment in love, but full of humor and a faithful friend.

Old Curiosity Shop, The.—A tale by Charles Dickens. An old man, having run through his fortune, opened a curiosity shop in order to earn a living and brought up a granddaughter, named Nell [Trent], fourteen years of age. The child was the darling of the old man, but, deluding himself with the hope of making a fortune by gaming, he lost everything, and went forth, with the child, a beggar. Their wanderings and adventures are recounted till they reach a quiet country village, where the old clergyman gives them a cottage to live in. Here Nell soon dies, and the grandfather is found dead upon her grave. The main character, next to Nell, is that of a lad named Kit [Nubbles], employed in the curiosity shop, who adored Nell as “an angel.” This boy gets in the service of Mr. Garland, a genial, benevolent, well-to-do man, in the suburbs of London; but Quilp hates the lad, and induces Brass, a solicitor of Bevis Marks, to put a five pound banknote in the boy’s [808] hat, and then accuse him of theft. Kit is tried, and condemned to transportation; but, the villainy being exposed by a girl-of-all-work nicknamed “The Marchioness,” Kit is liberated and restored to his place, and Quilp drowns himself.

Old Man of the Sea.—In the Arabian Nights, a monster encountered by Sindbad the sailor in his fifth voyage. After carrying him upon his shoulders a long time, Sindbad at last succeeds in intoxicating him, and effects his escape. The Old Man of the Sea was also made the title of a humorous and well-known poem by O. W. Holmes.

Old Mortality, the best of Scott’s historical novels. Morton is the best of his young heroes, and serves as an excellent foil to the fanatical and gloomy Burley. The two classes of actors, viz., the brave and dissolute cavaliers, and the resolute oppressed covenanters, are drawn in bold relief. The most striking incidents are the terrible encounter with Burley in his rocky fastness; the dejection and anxiety of Morton on his return from Holland; and the rural comfort of Cuddie Headrigg’s cottage on the banks of the Clyde, with its thin blue smoke among the trees, “showing that the evening meal was being made ready.” Old Mortality is an itinerant antiquary, whose craze is to clean the moss from gravestones, and keep their letters and effigies in good condition.

Old Red Sandstone.—One of the most noted of Hugh Miller’s famous writings on geological subjects. It revealed his discovery of fossils in a formation which, up to that time, had been deemed almost destitute of them.

Oliver.As You Like It, Shakespeare. Son and heir of Sir Rowland de Bois, who hated his youngest brother, Orlando, and whom he planned to murder by indirect methods. Orlando, finding it impossible to live in his brother’s house, fled to the forest of Arden, where he joined the society of the banished duke. Oliver pursued him, and as he slept in the forest a snake and a lioness lurked near to make him their prey. Orlando chanced to be passing, slew the two monsters, and then found that the sleeper was his brother Oliver. Oliver’s feelings underwent a change, and he loved his brother as much as he had before hated him. In the forest the two brothers met Rosalind and Celia. The former, who was the daughter of the banished duke, married Orlando; and the latter, who was the daughter of Frederick, the usurping duke, married Oliver.

Oliver Twist.—A novel by Charles Dickens. Thackeray, writing of this novel, in the character of “Ikey Solomons,” says: “The power of the writer is so amazing that the reader at once becomes his captive, and must follow him whithersoever he leads: and to what are we led? Breathless to watch all the crimes of Fagin, tenderly to deplore the errors of Nancy, to have for Bill Sikes a kind of pity and admiration, and an absolute love for the society of the Dodger. All these heroes stepped from the novel on to the stage; and the whole London public, from peers to chimney sweeps, were interested about a set of ruffians whose occupations are thievery, murder, and prostitution.” A remarkable feature of the work, and one which, on its publication, brought considerable odium on the writer, was its unsparing exposure of the poor-law and the workhouse system, which led to its representation on the stage being forbidden for a time.

Olivia.Twelfth Night, Shakespeare. A rich countess, whose love was sought by Orsino, duke of Illyria; but, having lost her brother, Olivia lived for a time in entire seclusion, and in no wise reciprocated the duke’s love. Olivia fell in love with Viola, who was dressed as the duke’s page, and sent her a ring. Mistaking Sebastian (Viola’s brother) for Viola, she married him out of hand.

Ophelia (ō-fē´liä).—Hamlet, Shakespeare. Daughter of Polonius, the chamberlain. Hamlet fell in love with her, but, after his interview with the Ghost, finds that his plans must lead away from her. During his real or assumed madness, he treats her with undeserved and angry rudeness, and afterward, in a fit of inconsiderate rashness, kills her father, the old Polonius. The terrible shock given to her mind by these events completely shatters her intellect, and leads to her accidental death by drowning.

Organon (ôr´ga-non).—The name given to the first work on logic by Aristotle. He is said to have created the science of logic. The Organon has been enlarged and recast by some modern authors, especially by Mr. John Stuart Mill in his System of Logic, into a structure commensurate with the vast increase of knowledge and extension of positive method belonging to the present day.